NA Digest, V. 21, # 8

NA Digest Monday, March 08, 2021 Volume 21 : Issue 8

Today's Editor:

Daniel M. Dunlavy
Sandia National Labs

Today's Topics: Subscribe, unsubscribe, change address, or for na-digest archives:

Submissions for NA Digest:

From: Alex Barnett
Date: March 04, 2021
Subject: Nonuniform FFT library new releases for CPU and GPU

We are pleased to announce two library releases for efficient
nonuniform fast Fourier transforms (NUFFTs), written largely at the
Flatiron Institute, NYC. Such transforms evaluate off-grid
exponential sums, to a user- chosen tolerance, at close-to-FFT
speeds. There are many applications to imaging, signal processing, and
scientific computing. Typically the CPU code achieves 1M to 100M
target points/sec, while the GPU code can exceed 1G points/sec; both
test competitively against other codes. Interfaces are simple yet
flexible. Both have PyPI packages:

- FINUFFT v.2: CPU code for type 1,2,3 transforms in dimensions 1,2,3.
C++/OpenMP; wrappers also to C, Fortran, MATLAB/Octave, Python, and
Julia; tests on Linux, MacOSX and Windows.
- v.2 includes dual-precision libraries, improved and vectorized
- Lead author: Alex Barnett (Flatiron Institute).
- cuFINUFFT v.1.2: GPU code for type 1,2 transforms in dimensions 2,3.
C++/CUDA; dual-precision, wrappers also to Python; multi-GPU
- Lead author: Yu-Hsuan Shih (NYU).

There is mature documentation, language examples, and tutorials.
There remain many developer opportunities if you would like to help.

From: Rob Falgout
Date: February 23, 2021
Subject: Copper Mountain Multigrid Methods, ONLINE, Mar 2021

20th Copper Mountain Conference on Multigrid Methods
Monday March 29 - Friday April 2, 2021
Daily schedule: 15:00 - 19:00 UTC

The Copper Mountain Conference is fast approaching. Here are a few
updates and reminders:

- The abstract submission deadline has been extended to Monday March 1
- Registration is open and the early registration deadline is March 8
- There will be three tutorials offered on March 24 - 26

For additional information and future updates, see our website at

Looking forward to seeing you at the conference!

From: Pamela Bye
Date: March 04, 2021
Subject: Mathematics in Defence and Security, ONLINE, Mar 2021

Online Event: 6th IMA Conference on Mathematics in Defence and
Security, Tuesday March 30 - Wednesday March 31, 2021
Online Conference via Zoom - Daily Delegate Rate Available
Mathematics Adapting to a Changing World

Science and technology play an increasingly important role in
supporting the defence and security industries. Mathematics is
fundamental to these two disciplines, providing a framework for
understanding and solving the varied and complex problems faced, and
to model systems and scenarios. These models are then used to estimate
system performance, find weaknesses in real systems, and suggest
improvements. This conference brings together a wide variety of
mathematical methods with defence and security applications. The
programme will include keynote speakers, presentations and poster
sessions, as well as refreshment breaks for informal discussions. It
is aimed towards mathematicians, scientists and engineers from both
industry and academia, in addition to government and military
personnel who have an interest in how mathematics can be applied to
defence and security problems.

For further information please contact the IMA Conferences Department

From: Ning Zheng
Date: March 01, 2021
Subject: Numerical Algebra, Honoring Ken Hayami, ONLINE, Mar 2021

We are very pleased to announce The 2nd Workshop on Numerical Algebra,
Algorithms and Analysis March 16-17, 2021 in honor of Professor Ken
Hayami on the occasion of his retirement from the National Institute
of Informatics and The Graduate University for Advanced Studies
(SOKENDAI), Japan. This two-day online workshop aims at bringing
together experts in the fields of numerical linear algebra,
large-scale matrix and tensor computations, iterative methods and
preconditioning, eigenvalue problems, least squares problems, etc.

Professor Hayami obtained the Doctor of Philosophy Degrees from the
Wessex Institute of Technology, UK (1991) and the University of Tokyo
(1993). He has worked on preconditioned conjugate gradient methods for
vector processors, quadrature for nearly singular integrals in the
boundary element method, Krylov subspace methods for singular systems
and least squares problems.

Further information on the workshop can be found on the webpage

The conference is open to everyone. Registration via the above webpage
is required for participation with Zoom URLs. We expect substantial
participation from Professor Hayami's many coworkers and colleagues,
including his former PhD and internship students.

From: Tamas Horvath
Date: February 22, 2021
Subject: SIAM Great Lakes Section Meeting, ONLINE, Apr 2021

The 2021 Great Lakes SIAM Sectional meeting will be held virtually
using Zoom on April 24, 2021.

The Great Lakes Section of SIAM (GLSIAM) was formed in 1988 to serve
Michigan, Northern Ohio, Northern Indiana, Southern Ontario, and the
surrounding areas. It organizes its annual conferences around themes
reflecting its members' evolving interests within applied mathematics.
Topical disciplines have included computer aided design, computational
fluid dynamics, numerical solutions of PDEs, complex systems, and
mathematical biology.

The invited speakers are
- Suncica Canic, University of California, Barkley
- Bernardo Cockburn, University of Minnesota
- Anita Layton, University of Waterloo
- Tapabrata Maiti, Michigan State University

Further information and registration can be found here

Participation is free, but registration is mandatory. Speaker
preference will be given to those who are from the Great Lakes SIAM

If you have any questions, contact Tamas Horvath

From: Abner J. Salgado
Date: March 03, 2021
Subject: The 50th Barrett Lectures, May 2021

The 50th Barrett Lectures will be held virtually on May 17 - 19, 2021
with the title A3N2M: Approximation, Applications, and Analysis of
Nonlocal, Nonlinear Models.

Attending the Lectures is free, but we require all participants to
register. More information can be found

From: Nicola Guglielmi
Date: March 03, 2021
Subject: Matrix Nearness Problems/Eigenvalue Optimization, Italy, Sep 2021

Call for applications, CIME Summer School on "Recent stability issues
for linear dynamical systems. Matrix nearness problems and eigenvalue
optimization", September 6 -- 10, 2021.

The school will be held at the International Mathematical Summer
Center, in the Grand Hotel San Michele
( in Cetraro, Italy. Attendance
in presence is desirable. Confirmation is postponed to the beginning
of summer and will depend on the general situation of the epidemic.
There will be a total of 20 hours of lectures, given by: Nicolas
Gillis (Univ. Mons), Volker Mehrmann (Tech. Univ. Berlin), Michael
Overton (Courant Institite, New York Univ.), Bart Vandereycken
(Univ. Geneva), as well as by the school's directors: Nicola Guglielmi
(Gran Sasso Science Inst.) and Christian Lubich (Univ. Tuebingen).

The following topics will be treated:
- Solving matrix nearness problems via Hamiltonian systems, matrix
factorization and optimization (N. Gillis)
- Eigenvalue optimization and matrix nearness problems via constrained
gradient systems (N. Guglielmi and Ch. Lubich)
- Regularity, stability, passivity and controllability of structured
linear descriptor systems (V. Mehrmann)
- Pseudospectra of linear operators and spectral value sets (M.
- Algorithms for eigenvalue optimization related to stability of
dynamical systems (B. Vandereycken)

Participation to the school is by invitation, and applications are now
open. PhD students, Postdoctoral Fellows and Researchers interested in
the topics covered in the above course are invited to apply: Financial support for
partecipation is optionally available (this can be requested upon

Best regards Nicola Guglielmi ( )

From: Kai Diethelm
Date: February 25, 2021
Subject: Professor Position, Mathematics and Data Science, UAS

The University of Applied Sciences Wurzburg-Schweinfurt is inviting
applications for a permanent full-time professorship (salary grade W2)
for Mathematics and Data Science. The postion is assigned to the
university's campus in the city of Schweinfurt, Germany, and can be
filled as soon as possible. Full details are available at

Please feel free to contact us if you need any additional information.

From: Roel Verstappen
Date: March 02, 2021
Subject: Professorship Position, Computational Mathematics, Univ of Groning=


The University of Groningen invites applications for a
assistant/associate/full professorship in the field of Computational
Mathematics. We are looking for a researcher in Mathematics who will
develop computational solutions to today's highly complex problems in
science and engineering, ranging from the design of computational
models, to the mathematical analysis of numerical algorithms. We are
recruiting at the level of Assistant (tenure track), Associate
(tenure) or Full Professor, depending on your profile.

Call and further information at

The deadline for applications is 31 March 2021 11:59pm.

From: Maya Neytcheva
Date: February 23, 2021
Subject: Multiple Positions, Scientific Computing, Uppsala Univ

The Division of Scientific Computing within the Department of
Information Technology at Uppsala University is announcing three new
positions as follows:

(1) A tenure track position as Assistant Professor in Scientific
Computing. Applications from candidates in the full span of the field
of Scientific Computing are welcome. Applicants who have obtained a
doctoral degree or achieved the equivalent competence in five years or
less prior to the end of the application period will be given
priority. Link to announcement:

(2) A permanent position as Associate Professor in Scientific
Computing. Applications from candidates in the full span of the field
of Scientific Computing are welcome. Link to announcement:

(3) A permanent position as Associate Professor in Numerical Analysis.
Applications from candidates in the field of Scientific Computing with
a specialisation in Numerical Analysis are welcome. Link to

An applicant who is offered an employment as Associate Professor can
be promoted to Professor under the conditions described in the

From: Kristian Bredies
Date: February 22, 2021
Subject: Tenure Track Position, Didactics of Mathematics, Univ of Graz

At the Institute of Mathematics and Scientific Computing at the
Faculty of Natural Sciences, the University of Graz is seeking to
appoint a Tenure Track Professor of Didactics of Mathematics (40 hours
per week; selection procedure in accordance with Section 99 (5) of the
Universities Act (UG). Initially the successful candidate starts as an
Assistant Professor with a qualification agreement for a fixed term
tenure phase of six years. After successful completion of the
qualification goals the position will be converted into a permanent
Associate Professor position in accordance with the Salaried Employees
Act (AngG). Expected starting date October 1st 2021)

The successful candidate will be responsible for the subject of
"Didactics of Mathematics" in theory and in practice. He/she
contributes to research-oriented teaching in the didactics of
mathematics, conducts projects on teaching methodology and reaches out
to non-university educational institutions. The post holder will
possess solid knowledge of mathematics and be qualified to conduct
didactic research. An integration into the faculty's Didactic Centre
for Natural Sciences and Mathematics (DINAMA) is expected; cooperation
with the research groups at the institute is preferred.

Application deadline: March 17th 2021
Reference number: KS/1/99 ex 2020/21
Planned dates of the applicant's presentation: 25. - 26. May 2021

Please submit your application documents (in German or English) in
accordance with the general application guidelines (which can be found
at ( before
the stated deadline. Your application documents should include the
reference number of the position and be sent by email to:

For further information please contact Prof. Kristian Bredies

From: Thomas M=C3=A4rz
Date: March 03, 2021
Subject: Lecturer Position, Numerical Analysis, Darmstadt, Germany

The Department of Mathematics and Natural Sciences of the Darmstadt
University of Applied Sciences is recruiting a professor in the
subject area of Numerical Analysis to take up duties in the winter
term 2021/22 (1st October 2021).

Further details regarding this position can be found here

From: Evrim Acar
Date: March 05, 2021
Subject: Research Scientist Position, Data Science/ML, SimulaMet, Norway

The Machine Intelligence Department (MIND) at Simula Metropolitan
Center for Digital Engineering (SimulaMet) in Oslo has an opening for
an outstanding computer science researcher in data mining/machine
learning. Our research at MIND focuses on advancing data science by
developing novel methods/algorithms to address challenges in
real-world problems, with a particular focus on matrix/tensor
factorizations, and multi-modal data mining using coupled
factorizations. This research scientist position will involve
interactions with multidisciplinary groups consisting of applied
mathematics, computer science, systems biology, and clinical
researchers. Candidates should be interested in both fundamental
methodological developments and impact of applications.

For more details, please see the full job posting:

From: Kathrin Welker
Date: February 27, 2021
Subject: Postdoc Position, Optimization, HSU Hamburg, Germany

The Helmut-Schmidt-University / University of the Federal Armed Forces
in Hamburg (Germany) offers a position as a Postdoctoral Researcher
(f/m/d). The position is a full-time position and complete funding
for 3 years is available. The successful candidate should support and
participate in current research projects of the working group, in
particular the analytical and numerical investigation of shape
optimization problems and the development of optimization methods. For
more information about research topics and projects of the working
group, please see . A
special focus should be the analytical and numerical investigation of
a new shape derivative scheme as described in the DFG-project
"Semi-smooth Newton methods on shape spaces" on the mentioned
homepage. Moreover, the investigation of optimization methods on shape
spaces like manifolds or diffeological spaces is a fundamental
research topic of the working group.

Requirements for employment are a PhD in mathematics, a strong
background in optimization or numerical mathematics, fundamental
knowledge in differential geometry and programming skills.

For the job announcement, please see

The job announcement is formulated in German but of course
applications from international applicants are very welcome. For any
questions, please contact Prof. Dr. Kathrin Welker (
Your application should include at least a cover letter, CV and
certificates of academic degrees. Moreover, letters of recommendation
are very welcome. Applications should be directed by e-mail to by mentioning the reference number BIW-
0221 by March 15, 2021.

From: Konrad Steiner (ITWM)
Date: March 04, 2021
Subject: Postdoc Position, Quantum Computing, Fraunhofer ITWM, Germany

Quantum Computing in Computational Mechanics
Supervisor: Matthias Kabel

In cooperation with IBM Germany, the Competence Center for Quantum HPC
has been established at Fraunhofer ITWM. The Competence Center Q-HPC
has access to the newest IBM quantum computers. In the material
simulation group of the Competence Center Q-HPC, the research will
focus on the usage of IBM quantum computers for mechanical
characterization of composite materials. We are looking for a
candidate with strong background and interest in quantum
algorithms. Knowledge in numerical methods for solving partial
differential equations is desired. The initial appointment will be
for one year with the possibility of extension.

Applications should contact Matthias Kabel
( directly with the following
information: a cover letter, curriculum vitae, transcript(s) of
records, lists of publications and presentations, the contact
information of at least two references, and a one-page statement
describing the applicant's current research work & interests.

For more information about the Competence Center Q-HPC see:

From: Sheehan Olver
Date: February 25, 2021
Subject: Postdoc Position, Spectral methods, Imperial College

Applications are invited for a Research Associate position in the
Department of Mathematics at Imperial College London. The position is
funded by the Engineering and Physical Sciences Research Council
(EPSRC) and will involve the development and analysis of spectral
element methods for fractional differential equations, with
applications to applied analysis and medical imagining. This exciting
interdisciplinary project involves collaboration between Sheehan Olver
at Imperial, Jose Carrillo at Oxford, and Bradley Treeby at UCL.

Closing date is 25 March 2021. Please apply via:

For any enquiries, please contact Sheehan Olver,

From: Julianne Chung
Date: March 02, 2021
Subject: Postdoc Positions, Virginia Tech

The Department of Mathematics at Virginia Tech invites applications
for up to three postdoctoral associate positions (one Patricia Ann
Caldwell Postdoc and two department Postdocs). Applicants in all areas
of mathematics will be considered. Preference will be given to
applicants who can identify a Virginia Tech faculty member who will
serve as a research mentor. For a list of faculty research areas and
faculty research advisors, please go to The teaching assignment is at
most one course per semester.

Applications must go through Virginia Tech HR's online system. The
deadline for full consideration of applications is April 2, 2021.

Caldwell Postdoc Associate:

Department Postdoc Associate:

From: Philipp Neumann
Date: February 27, 2021
Subject: PhD/Postdoc Positions, High Performance Computing

Positions at salary grade TVoD E13 (PhD/Postdoc) are available, funded
until 31.12.2024, at the chair for high performance computing,
Helmut-Schmidt-Universitat Hamburg.

Research directions are given across the wide range covered by HPC for
applications (multiscale flow simulations; machine learning;
exploration of novel/existing computational techniques for novel HPC
hardware; HPC for logistics/optimization problems; etc.). The official
announcements are available on the website of the

Please send your actual application with the usual documents to, mentioning the corresponding reference
numbers. For inquiries on the positions, please contact Philipp
Neumann: philipp.neumann@hsu-hh.deResearch assistant wanted for our
team Lattice Boltzmann Research Group at KIT: Within the scope of a
research project on simulation and visualization (especially VR/AR and
Apps) of flows, a full-time position is to be filled
temporarily. After familiarisation, remuneration is paid according to
TV-L, E 13. There is the possibility of a doctorate.

Besides enjoying scientific problem analysis as well as mathematical
and/or process engineering problems and/or computer science, we expect
you to have good programming skills, initiative, imagination and good
communication skills in written and spoken English AND German. Great
importance is attached to working in a team.

Please send applications with the usual documents in a pdf file to .

From: Mathias J Krause
Date: March 05, 2021
Subject: PhD/Postdoc Postion, Simulation and Visualization

Research assistant wanted for our team Lattice Boltzmann Research
Group at KIT: Within the scope of a research project on simulation and
visualization (especially VR/AR and Apps) of flows, a full-time
position is to be filled temporarily. After familiarisation,
remuneration is paid according to TV-L, E 13. There is the possibility
of a doctorate.

Besides enjoying scientific problem analysis as well as mathematical
and/or process engineering problems and/or computer science, we expect
you to have good programming skills, initiative, imagination and good
communication skills in written and spoken English AND German. Great
importance is attached to working in a team.

Please send applications with the usual documents in a pdf file to .

From: Anna-Karin Tornberg
Date: February 23, 2021
Subject: PhD Position, Numerical Analysis, KTH

The department of Mathematics at the Royal Institute of Technology
(KTH) seeks applications for a Ph.D student position in Applied and
Computational Mathematics with specialization in Numerical
Analysis. The research project aims to develop new algorithms that
integrate numerical methods for partial differential equations with
machine learning to solve multiscale problems in fluid dynamics. The
PDE algorithms will to a large extent be based on boundary integral
equations, and the project will span over theory, algorithms, software
and applications.

The doctoral student will be supervised by Professor Anna-Karin
Tornberg and Docent Ozan Oktem.

Application deadline March 22.

English version of ad:

Swedish version of ad:

From: Matteo Giacomini
Date: February 26, 2021
Subject: PhD Position, Scientific Machine Learning, UPC-CIMNE

One fully-funded PhD position is available in the Innovative
Algorithms for Fast Accurate Computing group
( at the International Centre for Numerical
Methods in Engineering (CIMNE) in Barcelona.

The PhD project belongs to the line of investigation on Scientific
Machine Learning for Computational Engineering, with special emphasis
towards flow and wave propagation problems. This emerging field
revolves around the groundbreaking interaction of numerical methods
for engineering, reduced order models and machine learning techniques
from computer science, for the solution of complex problems in
physical sciences and engineering.

The successful candidate will join CIMNE to work under the supervision
of Prof. Antonio Huerta and Dr. Matteo Giacomini and she/he will enrol
on a PhD programme at Universitat Politecnica de Catalunya (UPC). The
duration of the fellowship is three years and the successful candidate
will have access to state-of-the-art research and computing facilities
at both UPC and CIMNE. CIMNE currently holds the Severo Ochoa
Excellence Award which identifies and promotes public research centres
in Spain that stand out as international references in their
specialised fields. The prospective PhD student is expected to start
as soon as possible and not later than September 2021.

Interested candidates are invited to send a CV, transcripts of BS and
MS studies and the contact information of at least two academic
references to Dr. Matteo Giacomini
( Screening starts immediately and will
continue until the position is filled.

- Strong undergraduate and MS degree (or equivalent) record in applied
mathematics, computational science and engineering or related
- Knowledge of numerical methods for the approximation of partial
differential equations, with special emphasis on the finite element
method. Knowledge of reduced order models and machine learning is
not compulsory but will be considered an advantage.
- Good programming skills (Matlab and/or Fortran).
- Hard-working and enthusiastic attitude.
- Curiosity and commitment to develop high-quality research.
- Good written and oral communication skills in English.

From: Duc Nguyen
Date: March 06, 2021
Subject: CFP, CMB Drug Design and Discovery for COVID-19

We are currently accepting submissions for our upcoming special issue
entitled "Drug Design and Discovery for COVID-19", which will be
published in the journal, Computational and Mathematical Biophysics
(CMB). The purpose of this special issue is to provide a medium for
researchers from mathematical and biophysical sciences and other
related disciplines to report novel mathematical models, analysis,
computational algorithms, and biological applications to explore the
mechanism of drug and protein interaction, drug's physical property
and activity, downstream biological effect of drug-target
interactions, and potential therapeutic strategies against COVID-19.

Potential topics include, but are not limited to: Drug design,
screening, delivery; Drug repurposing; Structure-activity
relationships; Molecular modeling; Structural biological studies;
Pharmacokinetics & toxicology; Diagnostic technology; Therapeutic
medicine; Host-pathogen interaction; Precision medicine; Mutation
predictions; Vaccine development; Simulations and software

Before submission authors should carefully read over the author
guidelines, which are located at
All manuscripts are subject to the standard peer review process before
publication. Please note the publisher has waived the Article
Processing Charges for this special issue, but articles will be
open-access in accordance with the overall goals of the journal.
Prospective authors should submit their manuscript online at, and select Article Types as this special

We are looking forward to your submission. If you have any questions,
please contact the CMB Journal Editor at:

Important Dates: Manuscript due: July 1st, 2021; First round of reviews:
August 15th, 2021; Anticipated publication date: October 31st, 2021

Date: March 02, 2021
Subject: CFP, CMM Linear Algebra, Matrix Analysis, and Applications

Computational and Mathematical Methods is an interdisciplinary journal
dedicated to publishing the world's top research in the expanding area
of computational mathematics, science and engineering
( The journal
connects methods in business, economics, engineering, mathematics and
computer science in both academia and industry.

This is a reminder of the call for papers for the special issue on
"Linear Algebra, Matrix Analysis and Applications".

Mathematical modeling of problems arising in engineering, physics,
mechanics, etc. leads in many cases, directly or after a
discretization process, to solving systems of linear equations of
finite dimension. Besides, other problems of Numerical Analysis, such
as approximation, interpolation, nonlinear systems, computation of
eigenvalues, etc., lead to the resolution of large systems. Thus, it
is essential to develop efficient numerical Linear Algebra methods, in
both sequential and parallel environments, to solve them. The main
purpose of this Special Issue is to collect recent methods for solving
such problems and applications from a multidisciplinary approach.

Authors should follow the author guidelines. All papers must be
submitted via the online system

Authors need to make sure that they specify the paper is a
contribution for "Special Issue on Linear Algebra, Matrix Analysis and
Applications" and select the article type, when prompted. All papers
will be peer reviewed according to the high standards of CMM.

Deadline for submissions: June 30, 2021

From: Lothar Reichel
Date: February 25, 2021
Subject: Contents, ETNA, 51

Contents, Electronic Transactions on Numerical Analysis (ETNA)
Vol. 53, 2020:

Special volume for the ETNA25 conference: Recent Advances in
Scientific Computing

ToC, Preface, 25 years of ETNA: Past, Present, and Future, pages i-xiv

S. Cipolla, M. Redivo-Zaglia, and F. Tudisco, Shifted and extrapolated
power methods for tensor l^p-eigenpairs, pp. 1-27

G. Barbarino, C. Garoni, and S. Serra-Capizzano, Block generalized
locally Toeplitz sequences: Theory and applications in the
unidimensional case, pp. 28-112.

G. Barbarino, C. Garoni, and S. Serra-Capizzano, Block generalized
locally Toeplitz sequences: Theory and applications in the
multidimensional case, pp. 113-216

S. Kindermann and K. Raik, A simplified L-curve method as error
estimator, pp. 217-238

R. Nasdala and D. Potts, Transformed rank-1 lattices for high-
dimensional approximation, pp. 239-282

A. Buccini and M. Donatelli, A multigrid frame based method for image
deblurring, pp. 283-312

B. Hofmann and R. Plato, Convergence results and low-order rates for
nonlinear Tikhonov regularization with oversmoothing penalty term, pp.

A. Lanza, M. Pragliola, and F. Sgallari, Residual whiteness principle
for parameter-free image restoration, pp. 329-351

D. Lj. Djukic, R. M. Mutavdzic Djukic, A. V. Pejcev, and
M. M. Spalevic, Error estimates of Gaussian-type quadrature formulae
for analytic functions on ellipses - a survey of recent results,
pp. 352-382

M.-H. Yueh, H.-H. Huang, T. Li, W.-W. Lin, and S.-T. Yau, Optimized
surface parameterizations with applications to Chinese virtual
broadcasting, pp. 383-405

V. De Simone, D. di Serafino, and M. Viola, A subspace-accelerated
split Bregman method for sparse data recovery with joint l_1-type
regularizers, pp. 406-425

R. Orive, J. C. Santos-Leon, and M. M. Spalevic, Cubature formulae for
the Gaussian weight. Some old and new rules, pp. 426-438

M. Benzi, P. Fika, and M. Mitrouli, Performance and stability of
direct methods for computing generalized inverses of the graph
Laplacian, pp. 439-458

F. Pes and G. Rodriguez, The minimal-norm Gauss-Newton method and some
of its regularized variants, pp. 459-480

D. Lazzaro and S. Morigi, Matrix completion for matrices with low-rank
displacement, pp. 481-499

M. Fasi and B. Iannazzo, Substitution algorithms for rational matrix
equations, pp. 500-521

M. Hochbruck and J. Leibold, Finite element discretization of
semilinear acoustic wave equations with kinetic boundary conditions,
pp. 522-540

A. Frommer, B. Jacob, K. Kahl, C. Wyss, and I. Zwaan, Krylov type
methods for linear systems exploiting properties of the quadratic
numerical range, pp. 541-561

A. Heinlein, A. Klawonn, M. Lanser, and J. Weber, A frugal FETI-DP and
BDDC coarse space for heterogeneous problems, pp. 562-591

Date: February 27, 2021
Subject: Contents, J Numer Anal Approx Theory, 49 (2)

Journal of Numerical Analysis and Approximation Theory
published since 1972

Pointwise best coapproximation in the space of Bochner integrable
functions, E. Abu-Sirhan

Extended convergence analysis of Newton-Potra solver for equations,
I.K. Argyros, S.M. Shakhno, Y. Shunkin, H. Yarmola

Optimal properties for deficient quartic splines of Marsden type,
A. Bica, D. Curila-Popescu, M. Curila

Asymptotic properties and behavior of some nontrivial sequences, P.

Approximation on the regular hexagon, A. Guven

Generalized Ostrowski inequalities and computational integration, N.
Irshad, A.R. Khan, H. Musharraf

Basin attractors for derivative-free methods to find simple roots of
nonlinear equations, B. Neta

End of Digest