NA Digest Wednesday, November 15, 2023 Volume 23 : Issue 25

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: Mitch Graham
Date: November 14, 2023
New Book, Integer and Combinatorial Optimization
Problems and Solutions for Integer and Combinatorial Optimization:
Building Skills in Discrete Optimization
by Mustafa C. Pinar and Deniz Akkaya

The only book offering solved exercises for integer and combinatorial
optimization, this book contains 102 classroom tested problems of
varying scope and difficulty chosen from a plethora of topics and
applications. It has an associated website containing additional
problems, lecture notes, and suggested readings.

Topics covered include modeling capabilities of integer variables, the
Branch-and-Bound method, cutting planes, network optimization models,
shortest path problems, optimum tree problems, maximal cardinality
matching problems, matching-covering duality, symmetric and asymmetric
TSP, 2-matching and 1-tree relaxations, VRP formulations, and dynamic

Problems and Solutions for Integer and Combinatorial Optimization:
Building Skills in Discrete Optimization is meant for undergraduate
and beginning graduate students in mathematics, computer science, and
engineering to use for self-study and for instructors to use in
conjunction with other course material and when teaching courses in
discrete optimization.

2023 / xii + 125 pages / Softcover / 978-1-61197-776-9 / List $29.00 /
SIAM Member $20.30 / MO33

Bookstore link:

From: Bart De Moor
Date: November 09, 2023
Subject: Multiparameter Eigenvalue Problems, ONLINE, Nov 2023

Back to the Roots Seminar

The third seminar in our 2023-2024 series, organized by Prof. Dr. Bart
De Moor (KU Leuven, ESAT-STADIUS) and centered around the themes of
his ERC project "Back to the roots of data-driven dynamical system
identification", will be delivered by Prof. Michiel Hochstenbach.

Michiel Hochstenbach, TU Eindhoven, the Netherlands
Some recent developments in multiparameter eigenvalue problems
Thursday 16 November 2023 at 5pm
KU Leuven, Department of Electrical Engineering (ESAT), Aula R (ELEC

Abstract: We review some recent results in multiparameter eigenvalue
problems. This includes the fascinating problem of finding
determinantal representations of minimal size. This reflects some work
with Bor Plestenjak.

Everyone is welcome to attend in person.

The presentation will be streamed and can be followed by using this

The slides and recordings of the previous seminars are available on
our website.

From: Anne Reinarz
Date: November 15, 2023
Subject: UM-Bridge Workshop, ONLINE, Dec 2023

We are planning a two-day online workshop on UM-Bridge, a
language-agnostic interface linking Uncertainty Quantification (UQ)
packages and numerical model software. It enables
- Speeding up UQ projects from prototype to HPC
- Making UQ and model software available to a wide audience
- Reproducible, community-driven UQ benchmarking

This workshop has the following goals:
- Get users familiar with UM-Bridge
- Initiate collaborations between UQ and model experts
- Advance the UQ software ecosystem

It will take place on 11th and 12th of December 2023.

Registration is available until 1st of December. You find registration
form and further details on UM-Bridge and workshop at:

From: Michael Dumbser
Date: November 15, 2023
Subject: Numerical Methods for Hyperbolic PDE, Italy/HYBRID, Jan 2024

Short Course on Advanced Numerical Methods for Hyperbolic Equations
Laboratory of Applied Mathematics, University of Trento, Italy
The course will be held in hybrid format onsite and also be made
available online via ZOOM
Lecturers: Prof. Dr. Michael Dumbser and Dr. Laura del Rio
Special lectures: Prof. Dr. Dr. hc. E.F. Toro, OBE
Dates: January 29th - February 2nd 2024
Course fee: 250 EUR (online), other fees apply for onsite
participation (see course website)

This advanced short course is primarily designed for PhD students and
post-doctoral researchers in applied mathematics, scientific
computing, computational physics and computational mechanics. The
course consists in a structured intensive one-week programme of 40
hours of theoretical lectures and computer laboratory exercises on
advanced numerical methods for hyperbolic partial differential
equations with applications in engineering and science. The course
covers high order finite volume and discontinuous Galerkin methods,
also on unstructured triangular simplex meshes; Riemann solvers,
higher order TVD, ENO and WENO schemes, the discretization of
hyperbolic PDE with non-conservative products, well balanced schemes
as well as meshless Lagrangian particle methods. The lectures are
supplemented with computer laboratory exercises to provide practical
hands-on experience concerning the practical aspects of the
implementation of these advanced numerical methods.

Further information can be found on the dedicated web page

The deadline for registration is January 25th 2024.

From: Tobias von Petersdorff
Date: November 08, 2023
Subject: Sayas Numerics Day, USA, May 2024

9am to 6pm, May 11, 2024
George Mason University (Arlington Campus)

This annual workshop (formerly DelMar Numerics Day) displays the
diversity of research in computational mathematics in Maryland,
Virginia, Delaware and vicinity.

The meeting is named in honor of Francisco Javier Sayas (1968-2019).
He played a key role in establishing and running DelMar Numerics Day,
and was dedicated to its mission of giving especially younger
mathematicians an opportunity to share their work.

Georg Stadler (Courant Institute) will give the keynote talk.

There will be about 12 contributed talks (20 min. each), selected by
the scientific committee to represent diverse topics of research in
computational mathematics.

Registration is free. We particularly encourage graduate students and
young researchers to attend and submit talks. The deadline for
submitting talks is April 8, 2024.

From: Aziz Takhirov
Date: November 10, 2023
Subject: Assistant Professor Position, Univ of Sharjah, UAE

The Department of Mathematics at the University of Sharjah invites
applications for the Assistant Professor position. The department is
particularly interested in candidates with an active research program
in pure or applied mathematics and with a minimum of three years of
teaching experience at the University level. Only the candidates who
obtained their Ph.D. after 2015 will be considered.

Job posting:

Applications Due by November 22, 2023.
(Submitting earlier is strongly encouraged)

From: Fabienne Jezequel
Date: November 15, 2023
Subject: Postdoc Position, Numerical Validation, Sorbonne Univ, France

We are inviting applications for a postdoctoral position in Sorbonne
University, LIP6 laboratory, in Paris, France in the field of
numerical validation of high performance simulations.

This 2-year postdoc will be carried out in the framework of the NumPEx
France-2030 project devoted to High Performance Numerics for the
Exascale. The start date is January 2024 or later. The gross salary
follows the standard grid of Sorbonne University and ranges between
2682 to 3701 Euro per month, depending on experience.

The detailed announcement can be found here:

From: Alessandro Alla
Date: November 09, 2023
Subject: Postdoc Position, Optimal Control, Sapienza Univ, Italy

A one-year postdoctoral position in numerical analysis at the
Department of Mathematics, Sapienza University (about 1,840 Euro net
per month) will be open in the coming months.

The title of the research is "Optimal control for ODEs and PDEs:
approximation, analysis and applications."

The project will focus on new efficient and accurate numerical methods
for optimal control problems, using state-of-the-art techniques such
as Hamilton Jacobi equations, model order reduction, and machine

Socio-economic applications in public event management, opinion
formation and traffic models will be considered.

Ph.D. degree is not required, although applicants with PhDs are

For information or expressions of interest, please contact:

Elisabetta Carlini (
Roberto Ferretti (
Emiliano Cristiani (
Alessandro Alla (
Adriano Festa (

From: Bartosz Protas
Date: November 13, 2023
Subject: Postdoc Position, Theoretical Fluid Mechanics, McMaster Univ

An opening for a post-doctoral fellow is anticipated in Dr. Protas'
research group at McMaster University with a start date of August 1,
2024. The focus of this position will be fundamental investigations of
extreme behavior, such as potential singularity formation, in fluid
flow models using a combination of mathematical analysis and
large-scale computations. Expected background involves (ideally, a
combination of) theoretical fluid mechanics, large-scale scientific
computing (including numerical optimization) and PDE analysis. The
position will also involve a limited amount of teaching. Applications
should be submitted via (Fellowship ID: McMaster-BPDF
[#23758] and McMaster-PDF [#23673]; the advertisements on contain further details concerning the opening and
the application procedure).

Interested candidates may also contact

Dr. Bartosz Protas
Department of Mathematics & Statistics
McMaster University
Hamilton, Ontario, CANADA L8S 4K1

for additional information.

From: Marie Stöbe
Date: November 10, 2023
Subject: PhD Position, WIAS Berlin, Germany

WIAS invites applications for a PhD student position (f/m/d)
(Ref. 23/27) in the newly opened Weierstrass Group "Multi-species
Balance Laws" (Head: Dr. K. Hopf) starting as soon as possible. Field
of work: Mathematical analysis and nonlinear partial differential
equations. The successful applicant will be expected to perform
research in the above-mentioned field, with a focus on
reaction-cross-diffusion systems or two-phase flow. The research will
either be centered around wellposedness and qualitative behavior, or
the derivation of singular limits and effective equations. We are
looking for: A motivated, outstanding student with a master's degree
in mathematics and a strong background in analysis and partial
differential equations. Prior knowledge in nonlinear parabolic and/or
hyperbolic equations is desirable. The MSc degree should be completed
or close to completion.

What we offer: WIAS Berlin is a premier research institution known for
its strength in mathematical modeling and partial differential
equations, dynamical systems, optimization, and applied mathematics in
general. Payment according to the collective agreement for the public
service (TVoD Bund) includ-ing the usual social benefits (30 vacation
days in a 5-day week, company pension plan); subsidy for the company
ticket for public transport Mobile working is possible. A certified
(Audit berufundfamilie) family-friendly work environment. Berlin
offers endless opportunities to enjoy life outside work. Neither the
job nor living in Berlin requires German language (although WIAS
offers free German courses). We highly welcome international
applications. Scientifically, Berlin offers a rich landscape with
numerous opportunities for research, as well as job prospects in
academia and in- dustry. The successful postdoc will receive careful
mentorship both from the supervisor and from other peers through a
dedicated mentorship program.

Please direct scientific queries to Dr. K. Hopf (katharina.hopf@wias- The appointment is limited to three years. The reduced
work schedule is 29.25 hours per week, and the salary is according to
the German TVoeD Bund scale.

Please upload your complete application documents including cover
letter, curriculum vitae, certificates, list of MSc courses and
grades, copy of the master thesis or a preliminary version as soon as
possible via our online job-application facility
( using the button "Apply online"

Review of applications will begin on December 18, 2023. Applications
received after this date will be considered if the position is not yet

From: Bartosz Protas
Date: November 13, 2023
Subject: MSc/PhD Position, Applied Math/Scientific Computing, McMaster Univ

An opening for a graduate student (Master's or Ph.D.) is available in
Dr. Protas' research group at McMaster University with a start date of
September 1, 2024. The focus of this position is fundamental
investigations of extreme behavior, such as potential singularity
formation, in fluid flow models using a combination of mathematical
analysis and large-scale computations. Expected background involves
(ideally, a combination of) theoretical fluid mechanics, large-scale
scientific computing (including numerical optimization) and PDE
analysis. Details concerning application procedures are available at
the web address

The application deadline is February 1, 2024. Interested candidates
may also contact

Dr. Bartosz Protas
Department of Mathematics & Statistics, McMaster University

for additional information.

From: Badih Ghusayni
Date: November 10, 2023
Subject: Contents, Intl J Mathematics and Computer Science, 19 (2)

The following papers can be downloaded for free by clicking on :

Julaluk Boonsol, Pongsakorn Kitpratyakul, Thawhat Changphas, Bundit
Pibaljommee, A Product of Tree Languages

Mohanad N. Jaafar, Shaymaa Mukhlif Shraida, Reem Waleed Huisen,
Studying the Epidemiological Model for the Infection by Spiral Gastric

Mohanad N. Jaafar, Reem Waleed Huisen, Muna Dawood Salman, A
Mathematical Model Explaining the Pathogenicity of the Pathogenic
Strain of E.coli

Abderrahim El Moussaouy, M'Hammed Ziane, On T-Hopfcity of modules

Abderrahim El Moussaouy, Hopfcity and noncosingular submodules

Karim Benalia, On the Controllability for the 1D-Heat Equation with
Dirichlet Boundary condition, in the Presence of a Scale-Invariant

Zainab Kamal Abdullah, Asma Abdulelah Abdulrahman, Multi Object
Detection Based on Deep Learning and Discrete Wavelet Transform

Amara Chandoul, Alanod M. Sibih, Generalization of Horner Division

Hawraa Yousif Daher, Jehad Ramadan Kider, Some properties of convex
fuzzy normed space

Omayma Al-Smadi, Mohammad Al Zurayqat, Hadeel Alabraq, Shatha Hasan,
Analytical Solution for Time Fractional Reaction-Diffusion- Convection

Aicha Boussaha, Numerical simulation of new solitons-solutions having
anti-cubic and variable perturbation on the group-velocity dispersion
term of nonlinear optical fiber

Suton Tadee, On the Diophantine Equation

Suton Tadee, On the Positive Integer Solutions of in the Fibonacci and
Lucas Numbers, where p is Prime

Ali H. Hakami, Moin A. Ansari, Azeem Haider, On Some Graphs Based on
the Ideals of KU-algebras

Preeyanuch Honyam, Saranya Phongchan, A Note on Regularity of
Transformation Semigroups with Fixed Sets

Panuwat Luangchaisri, Thawhat Changphas, Prime one-sided ideals in
ternary semirings

Pronsuda Kongkam, Kanint Teerapaolarn, A new uniform bound on Poisson

Aveya Charoenpol, Udom Chotwattakawanit, Highest endomorphisms of a
Boolean lattice

Eman Rawshdeh, Heba Adel Abdelkarim, Edris Rawashdeh, Eigensharp
Property of Some Certain Graphs and their Complements

Abu Zaid Ansari, Faiza Shujat, Extension of -centralizers on semiprime

Rosalio G. Artes Jr., Jeffrey Imer C. Salim, Regimar A. Rasid,
Jerrivieh I. Edubos, Bayah J. Amiruddin, Geodetic Closure Polynomial
of Graphs

Nongluk Viriyapong, Chokchai Viriyapong, On the Diophantine

Chokchai Viriyapong, Nongluk Viriyapong, On the Diophantine equation
where a is congruent to 19 modulo 28

Andi Nurkifayah, Mawardi Bahri, Nasrullah Bachtiar, Amran Rahim, New
Fundamental Inequalities for Fractional Ambiguity Function

Suton Tadee, Chantana Wannaphan, On the Diophantine Equations

Panuwat Luangchaisri, Thawhat Changphas, Distributive Lattices of Soft
Ideals in Menger Algebras

Montri Thongmoon, Chawalit Boonpok, Strongly-continuous functions

Jeeranunt Khampakdee, Chawalit Boonpok, Properties of -closed

Napassanan Srisarakham, Chawalit Boonpok, On weakly -open functions

Prapart Pue-on, Chawalit Boonpok, -continuity for functions

Nipaporn Chutiman, Chawalit Boonpok, Some properties of weakly -open

Chalongchai Klanarong, Chawalit Boonpok, Characterizations of weakly
-closed functions

Hasan Almefleh, Approximating the Solution of Cell-cell Adhesion Model
via the Homotopy Perturbation Method

Shamri K. Arajain, Jeffrey Imer C. Salim, Injective Domination
Polynomial of the Dipyramidal Graphs

End of Digest