NA Digest, V. 21, # 4

NA Digest Friday, January 29, 2021 Volume 21 : Issue 4

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: Harbir Antil
Date: January 25, 2021
Subject: CMAI Colloquium, ONLINE, 2021

We will resume our Center for Mathematics and Artificial Intelligence
(CMAI) Colloquium on

January 29, 2021 at 10am (Eastern Time)

We plan to host many exciting speakers during the spring semester.
The confirmed speakers so far are:

1) Irene Fonseca (Carnegie Mellon University)
2) Georg Stadler (New York University)
3) Eric Vanden-Eijnden (New York University)
4) Eric Darve (Stanford)
5) Alexis F. Vasseur (UT Austin)
6) Xue-Cheng Tai (Hong Kong Batist University)
7) Michael Hintermueller (WIAS Institute and Humboldt University, Berlin)
8) Anders Petersson (Lawerence Livermore National Lab)
9) Jan Hesthaven (EPFL)
10) Roland Herzog (Chemnitz)
11) Youngsoo Choi (Lawrence Livermore National Lab)
12) Karl Kunisch (Graz)

You can find more details on the Colloquium website

We look forward to seeing you there. Please let us know if there are
any questions.

From: Jan Holland
Date: January 29, 2021
Subject: SN PDE and Applications, ONLINE, Feb 2021

After a 2-month winter break, we're excited to announce the re-launch
of the "SN Partial Differential Equations and Applications" Webinar on
February 8!

With this weekly Webinar, our goal is to contribute an initiative to
foster the communication of PDE- related research during these trying
times. Just as the journal of the same name, the SN PDEA Webinar is
aiming to bridge the areas of Mathematical Analysis, Computational
Mathematics and applications of Mathematics in the Sciences. The first
three presentations will be given by Huyen Pham (Universite Paris
Diderot), Eitan Tadmor (University of Maryland), and Diogo Gomes

Starting on February 8, Webinars will take place on Mondays on a
weekly basis at 9am EST, 3pm CET. They will be held via Zoom and will
be free to attend.

Registration for the webinar series is now open at (if you already
registered last year, your old personalised Zoom link will continue to

More information and updates on the Webinar can be found at

and video recordings of last year's talks can be found here

From: Suzanne Shontz
Date: January 25, 2021
Subject: Deadline extended, PDSEC, ONLINE, May 2021

The paper submission deadline for the 22nd IEEE international Workshop
on Parallel and Distributed Scientific and Engineering Computing
(PDSEC-21) ( has been extended to
February 5, 2021.

The conference will be held virtually on May 21, 2021 in conjunction
with the 35th IEEE International Parallel & Distributed Processing
Symposium (IPDPS 2021).

From: Dominik Bartuschat
Date: January 24, 2021
Subject: Advances in HPC Earth Sciences, Poland, Jun 2021

Eleventh International Workshop on Advances in High-Performance
Computational Earth Sciences: Applications and Frameworks (IHPCES

IHPCES 2021, the 11th workshop in the series of "Advances in
High-Performance Computational Earth Sciences" workshops, will take
place in conjunction with the ICCS 2021 Conference in Krakow, Poland,
from June 16-18, 2021.

The objective of this series of workshops is to provide a forum for
presentation and discussion of state-of-the-art research in high
performance computational earth sciences. IHPCES workshops foster
communication between Earth scientists, applied mathematicians, and
computer scientists. The workshop therefore presents a unique
opportunity to exchange advanced knowledge, computational methods, and
science discoveries in computational geosciences.

Specific topics of interest include, but are not limited to:
Large-scale simulations on supercomputing systems in earth sciences;
Advanced modeling and simulations on natural disaster prevention and
mitigation; Advanced numerical methods for high performance
computational earth sciences; Parallel and distributed algorithms and
programming strategies for supercomputers; Software engineering for
parallel systems with multi-core processors and accelerators;
Algorithms for Big Data analytics and applications for large-scale
data processing; Methodologies and tools designed for extreme-scale

Important dates:
February 12, 2021: Paper Submission Due
March 15, 2021: Author Notification
April 5, 2021: Camera-Ready Papers Due

From: Christopher Goodyer
Date: January 22, 2021
Subject: Numerical Positions, Arm, UK

Arm is looking for high quality applicants for two open positions in
our numerical libraries team. These positions will be based in
Manchester, UK.

Arm Performance Libraries is the vendor BLAS, LAPACK, FFT and sparse
linear algebra solution for the Arm architecture. Work here includes
all aspects of the product, from implementing new algorithms and
optimizing parallel implementations to writing highly performant

Arm RAN Acceleration Library is intended for customers deploying 5G
solutions. This is a small user base, but with a very large expected
deployment across the world, every optimization in this library is
highly important. Development areas are the set of network
operations, which includes large numbers of linear algebra cases.

In addition to working with colleagues developing similar products,
you will have plenty of opportunities to grow your sphere of
influence, collaborating with the architects of both the architecture
itself and individual core designs.

For more information, and to apply please see:

Date: January 25, 2021
Subject: Associate/Assistant Professor Position, Applied Mathematics

Research Center for Mathematics (RCM) in BNU-UIC invites applications
for multiple assistant professor positions in Applied Mathematics. The
preferred areas include mathematical and computational biology,
applied/stochastic PDEs, optimization, data analysis and applied
analysis. Exceptional candidates will also be considered as an
associate professor. Applicants must have a Ph.D. in Mathematics and
closely related areas. Successful candidates should have an
outstanding record of research and the strong evidence of teaching
ability in Mathematics.

A complete online application must be received by electronic
submission via in order to
receive consideration. Please provide the following required
materials: a cover letter addressing how the candidate's expertise
fits this position full curriculum vitae, research statement, teaching
statement, and three letters of reference. Salary and compensation
package are determined by qualification, accomplishment, and
experience. The center offers very competitive packages. Review of
applications starts in January 2021, and will remain open until
filled. Please direct all questions about the position to: Ms. May
Zhang at

Further Info:

From: Adamaria Perrotta
Date: January 26, 2021
Subject: Lecturer/Assistant Professor Position, Financial Mathematics, UCD

Applications are invited for a permanent post of a Lecturer/Assistant
Professor in Financial Mathematics within the School of Mathematics
and Statistics, University College Dublin, Ireland.

University College Dublin is seeking to appoint a permanent
Lecturer/Assistant Professor in Financial Mathematics in the School of
Mathematics and Statistics. Applicants should have expertise in
Financial Mathematics or Computational Finance, or both. The
successful candidate will be expected to engage in research in the
mathematical sciences, and to contribute to the School's wide-ranging
programme of undergraduate and postgraduate teaching. 95
Lecturer/Assistant Professor Salary Scale: 54,848 - 86,235 Euro per
annum. Appointment will be made on scale and in accordance with the
Department of Finance guidelines.

Closing date: 17:00hrs (local Irish time) on 15th February 2021.

Applications must be submitted by the closing date and time specified.
Any applications which are still in progress at the closing time of
17:00hrs (Local Irish Time) on the specified closing date will be
cancelled automatically by the system. UCD are unable to accept late

See for application details.

From: Victorita Dolean
Date: January 29, 2021
Subject: Fellow Position, NA and Scientific Computing, Strathclyde, UK

We are currently advertising a Chancellor's Fellow position in the
area of Numerical Analysis and Scientific Computing.

Full details on the vacancy can be found at:

The closing date is Sunday 21 February 2021.

General information on the University's Strathclyde Global Talent
Programme can be found at:

From: Isabel Narra Figueiredo
Date: January 27, 2021
Subject: Non-tenure-track/Postdoc Positions, Univ of Coimbra

Instituto de Sistemas e Robotica (ISR, ) -
Coimbra opens a call to hire two Postdoctoral Researchers, under the
research project no. 028960, MULTI-CAM CAPSULE ENDOSCOPY IMAGERY: 3D

Detailed information -

Applications from February 4, 2021 to February 18, 2021.

Monthly remuneration: Gross monthly Remuneration is 2.128,34 Euro.

Main Scientific Field: Image Processing (applications to medical

Start Date and workplace: The contracts are expected to start in March
2021 and have a duration of 15 months. The activities will be
developed at ISR-Coimbra facilities (Pole II,

Contact person - Prof. Helder Araujo or Prof. Isabel N. Figueiredo
E-mail: ,

From: Erin Carson
Date: January 24, 2021
Subject: Postdoc Postion, Mixed Precision NLA/HPC, Charles Univ

The Faculty of Mathematics and Physics at Charles University invites
applicants for a 1-year postdoctoral researcher position in mixed
precision numerical linear algebra and high-performance computing,
with possibility of extension.

The position is funded by the US Exascale Computing Project
(, a large consortium focused on the
goal of achieving exascale-level computation. In particular, the
selected candidate will be associated with the Multiprecision Effort
under the "xSDK: Extreme-scale Scientific Software Development Kit"
branch of the project. The project will involve rigorous error
analysis and algorithm development. The candidate should have a PhD in
computer science, mathematics, or a related field.

The position will remain open until filled, but for full
consideration, applications should be submitted by February 28,
2021. The position can begin as early as March 2021, but the start
date is flexible. The gross salary for the position is 58,000 CZK per
month (approximately 2,200 EUR), which is above the average salary in
Prague and is commensurate with living expenses.

To apply, please send the following to
- CV
- Research Statement
- PDF or link to PDF of PhD thesis
- In addition, the candidate should arrange for 2 recommendation
letters to be sent directly to the same email address.

From: Stefan Wild
Date: January 25, 2021
Subject: Givens Associate Position, Grad Internship, Argonne

The Mathematics and Computer Science Division at Argonne National
Laboratory is developing innovative techniques in numerical computing
and computational mathematics in its Laboratory for Applied Math,
Numerical Software, and Statistics (LANS, Our Givens Associate program is
intended to encourage graduate students who are beginning careers in
numerical analysis and computational mathematics in the broadest

Givens Associates will work actively with LANS scientists designing,
analyzing, and implementing numerical, statistical, and learning
algorithms and models.

The deadline for all application materials is March 1, 2021 but
applications will be processed as they are received. Please see
complete details at Internships are expected to
be remote for summer 2021. Although candidates must be in a
Ph.D. program at a U.S. university, U.S. citizenship is not required.

From: Annika Lang
Date: January 26, 2021
Subject: PhD Positions, Computational and Applied Mathematics, Sweden

At the Department of Mathematical Sciences, Chalmers University of
Technology & the University of Gothenburg, we are currently recruiting
the new PhD students for 2021:

Two PhD positions in computational mathematics
(random fields on manifolds and geometric hydrodynamics)
Temporary position for 4-5 years
Starting date: August 15, 2021 (but flexible)
Application deadline: February 26, 2021

PhD position in applied mathematics
(Coefficient Inverse Problems for time-dependent Maxwell equations)
Temporary position for 4-5 years
Starting date: August 15, 2021 (but flexible)
Application deadline: February 26, 2021

From: Matteo Tommasini
Date: January 25, 2021
Subject: PhD positions, PDE Modeling and Approximation, Austria

In the framework of the SFB 65 "Taming Complexity in Partial
Differential Systems" (, 4 PhD
positions are currently open in Vienna.

The annual gross salaries are approximately 30k Euro for 30 hours/week
(standard salaries for PhD positions funded by the FWF). Applicants
must have or be close to obtain a Master in Mathematical Sciences or
related fields. Start dates vary among the 4 positions. The deadline
for application is on 22.02.2021.

Further details on the individual positions as well as the online
application form can be found at

From: Attila Tanacs
Date: January 25, 2021
Subject: Contents, ACTA CYBERNETICA, 24 (4)

Regular papers

An Information Theoretic Image Steganalysis for LSB Steganography.
Sonam Chhikara, Rajeev Kumar

On the Steps of Emil Post: from Normal Systems to the Correspondence
Decision Problem, Vesa Halava, Tero Harju

Estimating the Dimension of the Subfield Subcodes of Hermitian Codes,
Gabor Peter Nagy, Sabira El Khalfaoui

Graph Coloring based Heuristic for Crew Rostering, Laszlo Hajdu,
Attila Toth, Miklos Kresz

Pixel Grouping of Digital Images for Reversible Data Hiding, Sultan
Abdul Hasib, Hussain Md Abu Nyeem

Semi Fragile Audio Crypto-Watermarking based on Sparse Sampling with
Partially Decomposed Haar Matrix Structure, Electa Alice Appadurai,
Mahabaleswara Ram Bhatt, Geetha D.D.

From: Ed Saff
Date: January 27, 2021
Subject: Contents, Constructive Approximation, 53 (1)

Constructive Approximation
Volume 53, Issue 1, 2021

Orthogonal Polynomials with Ultra-Exponential Weight Functions: An
Explicit Solution to the Ditkin-Prudnikov Problem, S. Yakubovich

Product Besov and Triebel-Lizorkin Spaces with Application to
Nonlinear Approximation, Athanasios G. Georgiadis, George Kyriazis,
and Pencho Petrushev

Higher-Order Riesz Transforms of Hermite Operators on New Besov and
Triebel-Lizorkin Spaces, The Anh Bui and Xuan Thinh Duong

A Family of Entire Functions Connecting the Bessel Function J1 and the
Lambert W Function, Christian Berg, Eugenio Massa and Ana P. Peron

Some q-Supercongruences from Transformation Formulas for Basic
Hypergeometric Series, Victor J.W. Guo and Michael J. Schlosser

Decompositions with Atoms and Molecules for Variable Exponent
Triebel-Lizorkin-Morrey paces, Antonio Caetano and Henning Kempka

From: Emily Richardson
Date: January 26, 2021
Subject: Contents, IMA Journal of Numerical Analysis, 41 (1)

Contents, IMA Journal of Numerical Analysis, 41 (1)

IMA Journal of Numerical Analysis
Links to all articles in this issue are available online at:

Analysis of limited-memory BFGS on a class of nonsmooth convex
functions, Azam Asl, Michael L Overton

Stability of Galerkin discretizations of a mixed space-time
variational formulation of parabolic evolution equations, Rob
Stevenson, Jan Westerdiep

Trace finite element methods for surface vector-Laplace equations,
Thomas Jankuhn, Arnold Reusken

A log-barrier Newton-CG method for bound constrained optimization with
complexity guarantees, Michael O'Neill, Stephen J Wright

Implicit MAC scheme for compressible Navier-Stokes equations: low Mach
asymptotic error estimates, David Maltese, Antonin Novotny

Nonconforming finite element discretization for semilinear problems
with trilinear nonlinearity, Carsten Carstensen, Gouranga Mallik,
Neela Nataraj

Orthogonal structure on a quadratic curve, Sheehan Olver, Yuan Xu

A modified limited memory steepest descent method motivated by an
inexact super-linear convergence rate analysis, Ran Gu, Qiang Du

A numerical-analysis-focused comparison of several finite volume
schemes for a unipolar degenerate drift-diffusion model, Clement
Cances, Claire Chainais-Hillairet, Jurgen Fuhrmann, Benoit Gaudeul

Sparsified discrete wave problem involving a radiation condition on a
prolate spheroidal surface, Helene Barucq, M'Barek Fares, Carola
Kruse, Sebastien Tordeux

On a multiscale a posteriori error estimator for the stokes and
Brinkman equations, Rodolfo Araya, Ramiro Rebolledo, Frederic Valentin

A mixed-primal finite element method for the coupling of
Brinkman-Darcy flow and nonlinear transport, Mario Alvarez, Gabriel N
Gatica, Ricardo Ruiz-Baier

hp-FEM for the fractional heat equation, Jens Markus Melenk, Alexander

Strong error analysis for stochastic gradient descent optimization
algorithms, Arnulf Jentzen, Benno Kuckuck, Ariel Neufeld, Philippe von

Convergence in Holder norms with applications to Monte Carlo methods
in infinite dimensions, Sonja Cox, Martin Hutzenthaler, Arnulf
Jentzen, Jan van Neerven, Timo Welti

Bridging the hybrid high-order and virtual element methods, Simon

Convergence analysis of high-order commutator-free quasi-Magnus
exponential integrators for nonautonomous linear Schrodinger
equations, Sergio Blanes, Fernando Casas, Cesareo Gonzalez, Mechthild

Energy-preserving methods for nonlinear Schrodinger equations,
Christophe Besse, Stephane Descombes, Guillaume Dujardin, Ingrid

On strong stability of explicit Runge-Kutta methods for nonlinear
semibounded operators, Hendrik Ranocha

Finite element error analysis of wave equations with dynamic boundary
conditions: L2 estimates, David Hipp, Balazs Kovacs

Localized inverse factorization, Emanuel H Rubensson, Anton G Artemov,
Anastasia Kruchinina, Elias Rudberg

Adaptive cubic regularization methods with dynamic inexact Hessian
information and applications to finite-sum minimization, Stefania
Bellavia, Gianmarco Gurioli, Benedetta Morini

Erratum to: "Trace operators of the bi-Laplacian and applications"
Thomas Fuhrer, Alexander Haberl, Norbert Heuer

End of Digest