NA Digest, V. 23, # 4

NA Digest Sunday, February 05, 2023 Volume 23 : 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: Yair Shapira
Date: February 04, 2023
Subject: New Book, Linear Algebra and Group Theory ...

Linear Algebra and Group Theory for Physicsts and Engineers
(2nd Edition)

This edition contains more material on the Jordan form, and also more
numerical stuff: high-order finite elements, with applications in
numerical relativity, electromagnetics, and quantum chemistry.

From: Victor Eijkhout
Date: January 30, 2023
Subject: Open Textbooks, The Art of HPC

I've brought my lesson materials about HPC under one umbrella:

1. The Science of Computing: theory of computer architectures,
computations, linear algebra, and how it all interacts.

2. Parallel Programming in MPI and OpenMP. The title says it all.

3. Introduction to Scientific Programming in C++ and Fortran. A
computation-inspired programming course.

4. HPC Carpentry. All those skills that improve your productivity.

Books & lecture slides are available for free download, sources are in
open repositories. You can support me by buying a paper copy.

Victor Eijkhout, Research Scientist
Texas Advanced Computing Center
The University of Texas at Austin

From: Michael Bader
Date: February 02, 2023
Subject: Supercomputing Spotlights, ONLINE, Feb 2023

Supercomputing Software for Moore and Beyond
Presenter: Didem Unat, Koc University, Turkey

Wednesday, February 15, 2:00-2:30 pm UTC
6 am PST / 9 am EST / 2 pm UTC / 3 pm CET / 5 pm AST / 11 pm JST

Participation is free, but registration is required Registration link:

Supercomputing Spotlights is a new webinar series featuring short
presentations that highlight the impact and successes of
high-performance computing (HPC) throughout our world. Presentations,
emphasizing achievements and opportunities in HPC, are intended for
the broad international community, especially students and newcomers
to the field. Supercomputing Spotlights is an outreach initiative of
SIAG/Supercomputing ( & Join us!

For further details, see the Abstract and Bio on

From: Dilmurat Azimov
Date: January 30, 2023
Subject: Optimal Guidance and Control, Autonomous Systems, USA, Mar 2023

Symposium Title: IUTAM Symposium on Optimal Guidance and Control for
Autonomous Systems
Location: University of Hawaii at Manoa, Honolulu, Hawaii, 96822
Event Type: Symposium
Submission Type: Abstract (up to two pages) or paper (Word or LaTex)
Symposium Website:

February 20, 2023: Final upload of papers
February 1- March 17, 2023: Regular registration
March 14 - March 17, 2023: On-site registration

Areas of the symposium include, but not limited to: Autonomous
systems; Motion planning; Optimal Control; Feedback control; Machine
learning; Robotic systems; Reinforcement learning; Swarm network
control; Centralized or decentralized control; Guidance, navigation
and control; Stability; Targeting; Data processing; Sensor fusion;
On-board control systems.

From: Hussam Al Daas
Date: February 04, 2023
Subject: Bath-RAL NA Day, UK, Apr 2023

The 18th annual Bath-RAL NA Day will be held on Friday 14th April 2023
at the Rutherford Appleton Laboratory. The speakers are:

Serge Gratton (Toulouse)
Lisa Kreusser (Bath)
Hussam Al Daas (RAL)
James Foster (Bath)
Jari Fowkes (RAL)
Jemma Shipton (Exeter)

Refreshments will be available from 10.15am and the talks start at
10.50am. The full programme is available at:

All are welcome, and there is no registration fee for attendance.
Please register using the following registration form so that security
passes can be arranged to allow you onto the RAL site: We will go out in Didcot for dinner
in the early evening. Please indicate on the form whether or not you'd
like to join us when registering so we have a rough idea of numbers.
Any queries can be emailed to - we look
forward to welcoming you at RAL in April

From: Nina Chan
Date: February 01, 2023
Subject: ICAM Applied Mathematics, Hong Kong, May 2023

We are pleased to announce that the "International Conference on
Applied Mathematics 2023 (ICAM 2023)" will be held at City University
of Hong Kong from May 30 to June 3, 2023. During the conference, the
2020 and 2022 William Benter Prizes in Applied Mathematics will be
awarded, and the recipients, Professor Michael Waterman of University
of Southern California and Professor Thomas J.R. Hughes of the
University of Texas at Austin, will give plenary lectures.

The objectives of the conference are to provide a forum for exchanging
ideas and in-depth discussions on different aspects of applied
mathematics, including: Computational Biology; Computational
Mechanics; Numerical PDEs; Imaging Sciences; Machine Learning and

The conference will also serve as an important forum for academic
exchange and collaboration among local, Mainland and overseas

More details:

From: Marija Stanic
Date: February 01, 2023
Subject: Analysis, Approximation, Applications, Serbia, Jun 2023

International Mathematical Conference Analysis, Approximations and
Applications (AAA2023) is dedicated to Academician Gradimir
V. Milovanovic on the occasion on his 75th anniversary.

The Conference is open for all fields of Mathematical Analysis,
Approximation Theory and their Applications.

The conference will be held from June 21 to 24, 2023 in Vrnjacka
Banja, Serbia.

More details about the conference can be found on the following

From: Dimitri Breda
Date: February 02, 2023
Subject: Summer School, Data-Driven Methods, Italy, Jun 2023

Registration is now open at the 18th "Dobbiaco Summer School in
Numerical Analysis", taking place from 18 to 23 June 2023 at
Dobbiaco/Toblach, Italy.

The title is "Data-driven methods for the computational sciences" and
the lecturers are

- Nathan Kutz, University of Washington, Seattle, USA

- Karsten Urban, Ulm University, Germany

The school is intended for PhD students and young researchers. Note
that the number of participants is limited. For further information
please see

From: Agnieszka Miedlar
Date: February 03, 2023
Subject: Acceleration and Extrapolation Methods, USA, Jul 2023

Applications are open for the ICERM Workshop on Acceleration and
Extrapolation Methods
to be held July 24-28, 2023, at the ICERM at Brown University. We
welcome and invite both junior and more senior researchers interesting
in learning more about these exciting and relevant techniques to apply
to the program.

Solving systems of nonlinear equations and optimization problems are
pervasive issues throughout the mathematical sciences with
applications in many areas. Acceleration and extrapolation methods
have emerged as a key technology to solve these problems efficiently
and robustly. The simple underlying idea of these methods is to
recombine previous approximations in a sequence to determine the next
term or approximation. This approach has been applied repeatedly and
from different angles to numerous problems over the last several
decades. Important methods including epsilon algorithms and Anderson
acceleration were introduced throughout the early and mid-20th
century, and are now common in many applied fields including
optimization, machine learning, computational chemistry, materials,
and climate sciences. Within the last decade, theoretical advances on
convergence, acceleration mechanisms, and the development of unified
frameworks to understand these methods have come to light, yet our
understanding remains incomplete. Fascinating links exist with methods
such as Nesterov acceleration and other momentum-based approaches that
have been developed in the fields of optimization and machine learning
in the past decades. These links and connections with dynamical
systems appear to be promising directions for further insight that
remain largely unexplored. The goals of this workshop include
assessing the state of the art and exploring connections between
closely related methods that may have been independently developed;
connecting theory to practice by fostering interaction between
theorists and applied practitioners; and, encouraging new and
continuing collaborations between participants.

From: Tobias Breiten
Date: February 02, 2023
Subject: COMinDS/MATH+ TES, Germany, Jul 2023

This is the first announcement for a joint COMinDS/MATH+ TES workshop
from July 12-14, 2023 in Berlin.

The workshop focuses on the development and the application of
optimization methods in the context of machine learning as well as on
the analysis of optimization problems arising in machine learning.

Invited Speakers
- Philipp Hennig (University of Tubingen)
- Fanny Yang (ETH Zurich)

Registration for participation with or without a talk is possible at
the workshop website:

From: Matteo Giacomini
Date: February 04, 2023
Subject: Summer School, Math & Comp Modelling, Spain, Jul 2023

Mathematical and Computational Modelling Across the Scales XX
Jacques-Louis Lions Spanish-French School on Numerical Simulations
in Physics & Engineering
July 3-7, 2023 - Barcelona, Spain

The XX edition of the Jacques-Louis Lions Spanish-French School on
Numerical Simulations in Physics & Engineering (https://ehf-jll- will take place from July 3rd to 7th, 2023 in
Barcelona, hosted by the Laboratori de Calcul Numeric (LaCaN) at
Universitat Politecnica de Catalunya (UPC BarcelonaTech) and the
International Centre for Numerical Methods in Engineering (CIMNE).

The XX edition of the JLL School is devoted to the challenges of
"Mathematical and Computational Modelling Across the Scales"
pertaining to physical problems involving micro-, meso-, macro- and
multi-scale phenomena. The thematic focus is broad, encompassing
contributions on modelling and numerical methods, for direct and
inverse problems, with applications spanning from wave propagation to
composite materials and complex fluids, from quantum mechanics to
biological and building simulations. The programme consists of four
short courses (https://ehf-jll- and three
keynote lectures (https://ehf-jll- on
the topics of the School. The School is primarily addressed to PhD
students and Postdoctoral fellows in applied mathematics and
computational engineering, but it is open to any researcher interested
in the field. The event includes a poster session, offering young
researchers the opportunity to disseminate their work, as well as
social events and room for discussions with the lecturers and other
attendees. You can contact the School Secretariat for any question
and follow us on our website for latest updates. The School will be a
fully in-person event and the official language is English.

From: Xiu Yang
Date: February 02, 2023
Subject: AIMMS-MOPTA Optimization Competition, USA, Aug 2023

We are thrilled to announce the opening of the 15th AIMMS-MOPTA
Optimization Modeling Competition. The competition is organized by
the conference organizers of MOPTA and AIMMS. The first phase's
submission deadline is May 31, 2023, 23:59 Eastern Time. Finalists are
expected to attend and present their results at the 2023 MOPTA
Conference to be held on August 16-18, 2023, at Lehigh University,
Bethlehem, PA, USA. The goal of the competition this year is to plan
locations of electric vehicle charging stations under uncertainty. The
problem description is posted on the competition website:

Information on eligibility, registration, submission, and competition
format are posted on the competition website. Teams of at most three
students can participate and should list a faculty advisor. The team
leader must be a graduate student, though the other team members can
be advanced undergraduate students. Each team member must be
registered as a full- time student at a recognized educational
institution during the Spring term of the 2022-2023 Academic
Year. Students with any background are eligible. Collaboration between
students from different departments is strongly encouraged. Each
finalist team will receive free registration for the conference for up
to two team members. As the conference is international, so is the
competition. Teams from all over the world can participate, as long as
at least one team member can come to the conference, should the team
make it to the final round. The official language of the competition
is English.

From: Tommaso Giovannelli
Date: February 01, 2023
Subject: MOPTA Conference, USA, Aug 2023

The Department of Industrial and Systems Engineering (ISE) at Lehigh
University invites you to contribute to the Modeling and Optimization:
Theory and Applications (MOPTA) 2023 Conference, which will take place
at Lehigh University in Bethlehem, Pennsylvania, USA on August 16-18,
2023 (

Registration for the conference is now open at All the
conference fees cover breakfast, lunch, and coffee breaks for each day
of the conference, and also a cocktail reception and the conference
banquet, which are scheduled for August 17, 2023. The conference fees
for students/postdocs also cover the Student Social, which is
scheduled for August 16, 2023.

Abstracts for contributed talks, invited talks, and poster
presentations are now being accepted. For more details, visit

The case study for the 15th AIMMS/MOPTA Optimization Modeling
Competition has been posted. The goal of this year's competition is to
plan locations of electric vehicle charging stations under
uncertainty. For more details about the competition, visit

- Abstract Deadline: Monday, May 29, 2023
- 15th AIMMS-MOPTA Competition Deadline:
May 31, 2023, 23:59 Eastern Daylight Time

From: Jorge Tiago
Date: January 31, 2023
Subject: Postdoc Position, Blood Flow Modelling, Portugal

The CEMAT at the University of Lisbon
( opens a call for a postdoc grant
(BL14/2023-IST-ID) to work on the development of mathematical and
computational techniques for Magnetic Resonance (MRI) data
assimilation in the frame of blood flow modeling. The call is open
from February 1 to February 14, 2023. Information about how to apply
can be found at (call

Informal inquiries:

From: Aime Fournier
Date: February 01, 2023
Subject: Postdoc Position, Geophysical Inverse Problems, USA

MIT invites applications for two postdoctoral positions in the general
area of computational mathematics, machine learning, and geophysical
inverse problems. The positions are jointly in the Imaging and
Computing Group (prof Laurent Demanet) and the Earth Resources
Laboratory. One position will explore uncertainty quantification in
the context of deep transfer learning. Another position will focus on
the inverse problem of estimating properties of porous rocks behind a
steel casing. The successful candidates are expected to work in an
interdisciplinary team to extend the group's capabilities in
scientific computing and machine learning. The details on how to apply
can be found on the group's opening page:

Review of applications will start on February 1, 2023

From: Matthew Colbrook
Date: February 01, 2023
Subject: Postdoc Position, NA, Univ of Cambridge, UK

A Postdoc position exists in the Department of Applied Mathematics and
Theoretical Physics at the University of Cambridge to work on verified
algorithms for infinite-dimensional spectra, control and data science
with Dr Matthew Colbrook.

The PDRA will work on developing robust numerical methods for
infinite- dimensional spectral computations and data-driven control
(broadly understood) under the project entitled "Verified data-driven
algorithms for control and neural network training" funded by the
Isaac Newton Trust.

Informal inquiries can be made via and more
information can be found at

From: Santiago Badia
Date: February 03, 2023
Subject: Postdoc Positions, Numerical PDEs, Australia

The School of Mathematics at Monash University (Melbourne, Australia)
invites applicants for three full-time postdoctoral positions in
Scientific Computing and Numerical Analysis.

Position 1 (surface-bulk PDEs; 3 years, $75,115 - $127,432 + 17%
employer superannuation): The role includes the design of advanced
numerical discretisations of multiphysics PDEs on dynamic surfaces and
surface-bulk coupling under the guidance of Prof Santiago Badia. In
addition, the project involves the design and numerical analysis of
variational space-time discretisations and unfitted and hybridisable
schemes on cut meshes. Possible extensions include nonlinear
approximation techniques, e.g., interpolated neural networks, advanced
geometric multigrid and domain decomposition preconditioners, inverse
problems and data assimilation.

Position 2 (electromechanics; 2 years, $75,115 - $101,944 + 17%
employer superannuation): The role includes the development of
advanced numerical discretisations for multiphysics PDEs under the
guidance of Prof Santiago Badia and A/Prof Ricardo Ruiz-Baier,
emphasising the mathematical and computational aspects of problems
with dynamic interfaces. The objective is to model the
electromechanics of the heart and torso, and to employ the combination
of these numerical techniques and models to deliver predictive tools
for patient-specific simulations of the cardiac function.

Position 3: (polytopal methods; 2 years, $75,115 - $101,944 + 17%
employer superannuation): The role includes the design and analysis of
hybrid high-order schemes for partial differential equations with
interfaces under the guidance of Profs Jerome Droniou and Santiago
Badia. The methods will rely on polytopal meshes obtained from
adaptive tree-based unfitted meshes. The research also includes
optimal and scalable parallel multilevel solvers for the discrete
systems arising from hybrid approximations.

Applicants must have a PhD in Mathematics, Physics, Engineering or a
related field. In addition, applicants must have a solid theoretical
background in the numerical approximation of PDEs using finite element
methods and expertise in efficiently implementing these
algorithms. The position is open to candidates of any nationality, and
the selection is based on academic excellence. More information about
the position, salary details, and the application procedure can be
found in the links above. We encourage interested candidates to apply
for all three jobs. Informal enquiries regarding the position can be
addressed to Santiago Badia ( The closing
date for applications is 05 March 2023.

From: Matthias Moller
Date: January 30, 2023
Subject: PhD Position, Applied Mathematics, TU Delft

The Numerical Analysis group at the Delft University of Technology is
looking for a talented and motivated PhD candidate to develop
computer- aided design and analysis tools for Very Flexible Floating
Structures (VFFSs) with application to offshore solar photovoltaics.

This position is associated with the multi-disciplinary FlexFloat
which is a joint effort between the Numerical Analysis group at the
Delft Institute of Applied Mathematics (DIAM) and the groups Ship and
Offshore Structures, and Ship Hydromechanics at the Department of
Maritime and Transport Technology (MTT).

For further details and applications see:

Inquiries should be directed to

From: Annika Lang
Date: February 03, 2023
Subject: PhD Position, Computational Mathematics, Sweden

At the Department of Mathematical Sciences at Chalmers and the
University of Gothenburg we have one more opening for a PhD position
to start in August 2023:

For the ERC funded project on time-evolving stochastic manifolds I am
recruiting one PhD student interested in the interaction of
stochastics, PDEs, geometry, and computation.

- More details and link to application system:
- Application deadline: March 2, 2023

Please contact Annika Lang ( if you have any

From: Yuji Nakatsukasa
Date: January 30, 2023
Subject: PhD Position, Randomized NLA, Oxford Univ/RAL

We would like to invite candidates with a strong background in
applied+computational mathematics and/or computational physics for a
funded 4-year PhD (Dphil) position at Oxford University, Mathematical
Institute, to start in fall 2023.

The PhD topic is titled "Reliable and efficient sketching algorithms
for randomised Principal Component Analysis", and will work broadly in
randomised numerical linear algebra, developing algorithms, theory,
implementation and applications. The student will be supervised by
Yuji Nakatsukasa (Oxford University) and Hussam Al Daas (Rutherford
Appleton Laboratory, STFC). The successful candidate will have the
opportunity to be hosted by both the Numerical Analysis Group at the
Mathematical Institute (Oxford University) and the Computational
Mathematics Group (Rutherford Appleton Laboratory, STFC).

Applications are made through the Oxford online system, with deadline
March 1. See the website

We encourage interested candidates to send us an expression of
interest as soon as possible. Please include a short CV when you do
so. For further details or to express interest, please send your
queries to Yuji Nakatsukasa,, and/or Hussam
Al Daas, .

From: Ned Nedialkov
Date: January 31, 2023
Subject: PhD Positions, McMaster Univ, Canada

Two industrially-funded Ph.D. positions are available in the
Department of Computing and Software at McMaster University, Ontario,
Canada. The research will be on mixed-precision numerical algorithms
and high- performance computing to accelerate the performance of
various solvers. A substantial component of the work is the
implementation of such algorithms and incorporating them in
industrial-strength codes. We seek candidates with a strong background
in applied mathematics and computing. Experience in C/C++, software
design and development, software optimizations for high-performance,
and writing parallel programs is highly desirable.

Interested candidates, please email Prof. Nedialkov at

From: Paola Lamberti
Date: February 03, 2023
Subject: CFP, Special Issue, Mathematics, Approx Theory and Applications

The journal Mathematics (ISSN 2227-7390, IF 2.592) is currently
running a Special Issue entitled "Approximation Theory and
Applications", with Paola Lamberti and Incoronata Notarangelo
(University of Torino) as Guest Editors. The aim of this Special
Issue of Mathematics is to collect the state of the art improvements
of several aspects of Approximation Theory and of its both theoretical
and applied branches and connections with other applied and
computational sciences. So research papers and review articles,
considering the developments of Approximation Theory, as well as
problems in which Approximation Theory plays a significant role, are

For further reading, please, follow the link to the Special Issue
website at:

The submission deadline is October 31, 2023. Submitted papers should
not be under consideration for publication elsewhere.

From: Carlin Sappenfield
Date: February 02, 2023
Subject: Contents, Constructive Approximation, 57 (1)

Constructive Approximation Volume 57, issue 1, February 2023

Riesz Energy Problems with External Fields and Related Theory,
P. Dragnev, R. Orive, E.B. Saff, and F. Wielonsky

Analysis of target data-dependent greedy kernel algorithms:
Convergence rates for f -, f . P - and f /P -greedy, Tizian Wenzel,
Gabriele Santin, and Bernard Haasdonk

Wall Polynomials on the Real Line: A Classical Approach to OPRL
Khrushchev's Formula, M. J. Cantero, L. Moral and L. Velazquez

Bidemocratic Bases and Their Connections with Other Greedy-Type Bases,
Fernando Albiac, Jose L. Ansorena, Miguel Berasategui, Pablo M. Berna,
and Silvia Lassalle

Wavelet Characterization of local Muckenhoupt weighted Sobolev spaces
with variable exponents, Mitsuo Izuki, Toru Nogayama, Takahiro Noi,
and Yoshihiro Sawano

Interlacing Properties of Coefficient Polynomials in Differential
Operator Representations of Real-Root Preserving Linear
Transformations, David A. Cardon, Evan L. Sorensen, and Jason C. White

End of Digest