NA Digest, V. 19, # 13

NA Digest Sunday, March 31, 2019 Volume 19 : Issue 13

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: Field G. Van Zee
Date: March 25, 2019
Subject: BLIS 0.5.2 now available

We are pleased to announce BLIS 0.5.2, made possible in part thanks to
contributions from the community as well as funding from NSF and

BLIS is a software framework for rapidly instantiating high-
performance BLAS-like dense linear algebra operations. Aside from
being a developer's tool, the framework also allows end-users to build
libraries that implement a superset of the BLAS, which can be called
via conventional BLAS-like or object APIs, or via standard BLAS
interfaces. (An optional CBLAS API is also available.)

BLIS 0.5.2 provides optimized kernel support across a variety of
microarchitectures, including Intel's Haswell/Broadwell/Skylake, AMD's
Ryzen/Epyc, and ARMv7/ARMv8. Intel's AVX-512 instruction set is also
supported for Skylake-X and Knights Landing.

Our most exciting recent development is a new Performance webpage that
showcases single-threaded and multithreaded performance of BLIS and
other implementations of BLAS for a representative set of datatypes
and level-3 operations on a variety of many-core architectures,
including Marvell ThunderX2, Intel Skylake-X, Intel Haswell, and AMD
Epyc [1].

For other links to code, documentation, mailing lists, publications,
and related information, please visit the BLIS github website [2].


From: Tobias von Petersdorff
Date: March 27, 2019
Subject: Delmar Numerics Day, USA, May 2019

DELMAR NUMERICS DAY is an annual workshop which aims to display the
research diversity of computational mathematics in Maryland, Delaware
and vicinity.

This year's meeting will be in honor of the 50th birthday of Francisco

It will be held on Saturday, May 11, 2019 at the University of
Maryland, College Park.

The keynote talk will be given by Bernardo Cockburn (University of

In addition there will be 12 contributed talks, 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 14, 2019.

From: Kirk M. Soodhalter
Date: March 26, 2019
Subject: Iterative Methods from the Continuum Perspective, Ireland, Jun 2019

UPDATE: This is a second announcement of our workshop on iterative
methods, to take place June 3-7, 2019, at Trinity College Dublin. We
are pleased to announce that we have received additional funding and
can now offer travel support for early-career researchers. The
deadline for abstract submissions and the (short and easy) application
for travel support is April 19, 2019.

Abstract submission: We welcome abstracts from a variety of related
applied mathematics fields. For example: numerical linear algebra,
numerical PDEs, optimization, numerical analysis, mathematical
modeling; to name a few.

Please see
for further details.

From: Maxwell Hayes
Date: March 25, 2019
Subject: SIAM Financial Mathematics & Engineering, Canada, Jun 2019

The SIAM Activity Group on Financial Mathematics and Engineering
(SIAG/FME) is pleased to announce that registration and the conference
program for the SIAM Conference on Financial Mathematics & Engineering
(FM19) are now available.

Conference: SIAM Conference on Financial Mathematics & Engineering (FM19)
Location: University of Toronto, Toronto, Ontario, Canada
Dates: June 4-7, 2019

Registration and the conference program are now posted at


Invited Speakers:
Alvaro Cartea, University of Oxford, United Kingdom
Christa Cuchiero, University of Vienna, Austria
Jean Pierre Fouque, University of California, Santa Barbara, U.S.
Jim Gatheral, Baruch College, U.S.
Albert S. Kyle, University of Maryland, U.S.
Charles-Albert Lehalle, Capital Fund Management, France
Fabio Mercurio, Bloomberg LP, U.S.
Josef Teichmann, ETH Zurich, Switzerland


For additional information, contact the SIAM Conference Department at

From: Yousef Saad
Date: March 28, 2019
Subject: Preconditioning 2019, USA, Jul 2019

The 2019 International Conference on Preconditioning Techniques for
Scientific and Industrial Applications (Preconditioning 2019)

July 1 -- 3, 2019. The University of Minnesota, Twin cities

Preconditioning 2019 is the 11th edition of the series of meetings
(one every two years) that address issues related to preconditioning
methods for solving general sparse matrix problems in large-scale
applications and in industrial settings. Preconditioning 2019 will
mark the 20th anniversary of this series of conferences which started
in 1999 at the University of Minnesota.

Here is a quick reminder on important deadlines:
- Proposals for Minisymposia are due on April 7th.
- Registration will open on Monday April 1st [barring any delays]. The
deadline for early registration is May 14th.
- Deadline for submitting an abstract/poster: May 5th.

For details consult

From: Hans Mittelmann
Date: March 24, 2019
Subject: Summer School in Machine Learning and Optimization, Austria, Jul 2019

This is to announce the first Vienna Summer School in Machine Learning
and Optimization in Vienna/Austria in the first week of July.

More details at

From: Dirk Praetorius
Date: March 29, 2019
Subject: Reliable Methods of Mathematical Modeling, Austria, Sep 2019

The biennial RMMM conferences bring together scientists developing
reliable methods for mathematical modeling. The 9th edition of the
conference will take place on September 9-13, 2019, at TU Wien.


Confirmed speakers:
- Soren Bartels (University of Freiburg, Germany)
- Alex Bespalov (University of Birmingham, UK)
- Helmut Harbrecht (University of Basel, Switzerland)
- Norbert Heuer (Pontifical Catholic University of Chile)
- Christian Kreuzer (TU Dortmund, Germany)
- Ilaria Perugia (University of Vienna, Austria)
- Ernst Peter Stephan (University of Hannover, Germany)
- Rob Stevenson (University of Amsterdam, Netherlands)
- Martin Vohralik (Inria Paris, France)

Topics: Mesh-adaptive numerical methods in various applied problems;
A-posteriori error control and verification of numerical solutions;
Validation of mathematical models used in computer simulation;
Nonlinear computational partial differential equations; Novel
discretization methods for the numerical approximation of PDEs.

Deadline for abstract submission: June 30, 2019
Deadline for registration: July 31, 2019

From: Eshetu Belete
Date: March 25, 2019
Subject: Part-time Position, Adama Science and Technology Univ, Ethiopia

Adama Science and Technology University in Ethiopia are looking
Associate professor and above in the area of Numerical Analysis. The
position is a part time may be 2 or 3 weeks in a course. This
position is not formally advertised but they are desperately looking
for it.

Salary: >= 4500 USD (open for negotiation)

To apply, please e-mail a detailed CV at

From: Stefanie Sonner
Date: March 27, 2019
Subject: Professor Positions, Applied Analysis, Radboud Univ

The Department of Mathematics at Radboud University in Nijmegen has
several open positions in Applied Mathematics, at all levels: full
professor / associate professor / tenure track assistant professor

For further details, see
Deadline: April 17, 2019

From: Satyendra Tomar
Date: March 30, 2019
Subject: Postdoc/Assistant-Professor Positions, Univ of Nova Gorica, Slonvenia

University of Nova Gorica (Slovenia) announces three positions for
postdoc or assistant professor. Deadline for applications 2019.04.20.

(1) Computational Mathematics
Position for two years. Further details at the following link

(2) Data science / data-driven modelling
Position for two years. Further details at the following link

(3) Discrete Mathematics / Algebra
Position for one year. Further details at the following link

From: Jose A Cuminato
Date: March 27, 2019
Subject: Postdoc Position, Applied Industrial Mathematical Modelling, Brazil

The Center for Mathematical Sciences Applied to Industry (CEPID-
CeMEAI) has a post-doc position available for starting
immediately. The requirements for the position are described
below. The appointed Post-doc will also get return travel from his/her
country to Brazil paid by the grant. CeMEAI is a consortium of several
Universities in Sao Paulo State. The position is initially for one
year, renewable for a second year pending on suitable performance.

1) Post-Doctoral Research Project
Departamento de Matematica e Computacao - Universidade Estadual
Paulista - UNESP - Presidente Prudente-Brazil
Location: Presidente Prudente - Sao Paulo State- Brazil
Title: Numerical methods for treatment of singularities in complex
flows of complex fluids
Supervisor: Cassio M. Oishi

Job Description/ Requirements: This proposal sets out a research plan
to investigate a hierarchical set of model equations that describe
complex viscoelastic materials. Such fluids can be found in many
industrial applications, as for instance problems involving process of
plastic, oils, chemicals, foods and minerals. An important application
of viscoelastic materials in complex geometries is related to the
extrusion problem (or die swell) referred to as a die in polymer
processing. In particular, in this type of flow there is a classical
difficulty due to the stress singularity in the changing of the
boundary conditions. The simulation of viscoelastic fluids with
singularities presents challenges related to the accuracy, stability
and convergence. Moreover, the presence of boundary layers can modify
the solution of the problem in certain regions of the domain. In this
way, this project is to focus on the improvements on the construction
of numerical strategies using the asymptotic knowledge of viscoelastic
stress singularity. The problems analysed will be defined in confined
geometries, such as contraction and cross-slot flows, and with free
surfaces, like stick-slip and extrudate swell. The development of this
project will involve a synergy of the CEPID supervisor in numerical
simulations with the expertise of a collaborator from the University
of Bath-UK in asymptotic methods. Candidates must hold a doctoral
degree in Applied Mathematics, or in a related area, with experience
in simulation of viscolastic flows and asymptotic methods for the
solution of these problems.

Interested candidates should e-mail a CV and two letters of
recommendation from university professors as soon as possible to:
Prof. Dr. Cassio M. Oishi
Department of Mathematics and Computer Science
Sao Paulo State University (UNESP)
P.O. Box 957
19060-900, Roberto Simonsen, 305 - Presidente Prudente - SP, Brazil
Phone: +55 18 32295623

From: Fred Roosta
Date: March 28, 2019
Subject: Postdoc Position, Machine Learning, Univ of Queensland

Applications are welcome for a 3-year postdoctoral position in a cross
section of Advanced Monte Carlo Methods and Machine Learning in the
School of Mathematics and Physics at The University of Queensland.

The primary purpose of this position is to conduct theoretical as well
as applied research in the intersection of machine learning/artificial
intelligence and advanced Monte Carlo methods. The successful
candidate will be supervised by Prof. Dirk Kroese
( and Dr. Fred Roosta

Application should be submitted at
before April, 17th, 2019.

From: Erin Carson
Date: March 27, 2019
Subject: Postdoc Position, Numerical Linear Algebra and HPC, Charles Univ

The Faculty of Mathematics and Physics at Charles University in Prague
invites applications for a postdoctoral researcher position within the
framework of the Primus Research Program "Scalable and Accurate
Numerical Linear Algebra for Next-Generation Hardware".

Applications are invited from candidates who have strong background in
numerical linear algebra, numerical analysis, or parallel
computing. In particular, we seek applicants with expertise in sparse
iterative solvers, algorithm design, high-performance computing,
machine learning, finite precision analysis, and/or computational and
data science application areas.

The initial appointment period is 2 years, with possibility of
extension. The anticipated start date is September 2019 (negotiable).

Candidates are encouraged to apply by June 1, 2019; the position will
remain open until filled.

For full details, see the job posting at:

Further details of the project can be found at the project website:

From: J. Lu
Date: March 28, 2019
Subject: Postdoc Positions, Image/Video Processing/Analysis, ML, Shenzhen Univ

Postdoc Positions in Shenzhen University, China
Location: Shenzhen, China
Job Type: Full-Time
Duration: 2 years
Number of Position: 2 Positions
Closing Date: Open Until Filled

Description: We are looking for Postdoctoral Researchers in
Image/Video Processing/Analysis, Machine Learning (Deep Learning),
Mathematical Imaging and Optimization, etc.

We have no teaching tasks and check in / check out policy for
Postdoctoral Researchers.

- Prof. Jian Lu (Shenzhen Key Laboratory of Advanced Machine Learning
and Applications)
- Prof. Lixin Shen (Syracuse University, USA)

The salary is about 330,000 RMB (49,000 US dollars) per year, of which
180,000 RMB per year is after-tax. Those who are interested please
send their C.V. to Prof. Dr. Jian Lu, e-mail:;

From: Anders Forsgren
Date: March 26, 2019
Subject: Postdoc Positions, Optimization, KTH Royal Institute of Technology, Sweden

We seek two candidates for postdoctoral positions in optimization to
the Division of Optimization and Systems Theory, Department of
Mathematics, KTH Royal Institute of Technology. In particular, the
positions are part of a project aimed at strengthening mathematical
disciplines of importance for artificial intelligence. We seek
candidates with a strong background in traditional mathematical
optimization, and an interest to couple traditional knowledge with new
ways of thinking in addressing optimization problems of importance for
artificial intelligence.

The successful candidates are expected to carry out research, in
addition to teaching up to 20% of the time. The specific research path
is to be outlined and motivated in the application by the successful
candidates. The postdoctoral positions are part of a renewal of
research in optimization at the division. It is expected that an
assistant professorship position will be announced during the duration
of the postdoctoral positions.


Last application date: 15.Apr.2019 11:59 PM CET

From: Miguel A. Benítez
Date: March 29, 2019
Subject: Postdoc and PhD Positions, BCAM

We have opened a call to fill 5 postdoctoral fellowships in the following
- Harmonic Analysis and Differential Equations. Application website:
- Computational Approximation Theory. Application website:
- Computational Mathematics. Application website:
- Statistical Physics. Application website:
- Algebraic Geometry and Singularities. Application website:

We also have some PhD and internship opportunities:
- PhD Student in 2D and 3D packing with curved geometries (BCAM-
Lantek). Application website:
- PhD Student in Machine Learning applied to electro welding (BCAM-
ITP Aero). Application website:
- Internship in Computational Neuroscience (BCAM-Biocruces).

The deadline to apply for these positions will be April 30th, 2019
(12:00 CET)

From: Anton Arnold
Date: March 25, 2019
Subject: Predoc Position, TU-Vienna, Austria

- job vacancy in the research group of Anton Arnold, at TU Vienna,
30 hours/week
- start: 1.4.2019 (or soon after), 4 years
- annual gross salary: 30.072 EUR

Scientific topic: The development of efficient numerical methods for
highly oscillatory differential equations (e.g. Schroedinger equation
in the classical limit) should be continued. On top of the employment
at TU Vienna, an association with the ongoing doctoral school
"Dissipation and dispersion in nonlinear partial differential
equations" is offered, for details see:

Requirements: completed master or diploma studies in mathematics.
solid knowledge of (partial) differential equations and numerical
analysis; programming experience

This position involves (moderate) teaching duties.

Application for position # 65.3.2: via e-mail to ; deadline 28.3.2019

For further scientific information contact:

From: Piotr Matus
Date: March 31, 2019
Subject: Contents, Computational Methods in Applied Mathematics, 2019 (2)


1. Presentation of the Special Issue on Recent Advances in PDE:
Theory, Computations and Applications (free access) Nataraj, Neela

2. Higher Order Mixed FEM for the Obstacle Problem of the p-Laplace
Equation Using Biorthogonal Systems, Banz, Lothar / Lamichhane, Bishnu
P. / Stephan, Ernst P.

3. Edge Patch-Wise Local Projection Stabilized Nonconforming FEM for
the Oseen Problem, Biswas, Rahul / Dond, Asha K. / Gudi, Thirupathi

3. Multigrid Methods Based on Hodge Decomposition for a Quad-Curl
Problem, Brenner, Susanne C. / Cui, Jintao / Sung, Li-yeng

4. Quasi-Optimality of Adaptive Mixed FEMs for Non-selfadjoint
Indefinite Second-Order Linear Elliptic Problems (free access),
Carstensen, Carsten / Dond, Asha K. / Rabus, Hella

5. Analysis of FEAST Spectral Approximations Using the DPG
Discretization, Gopalakrishnan, Jay / Grubisic, Luka / Ovall, Jeffrey
/ Parker, Benjamin

6. Stabilizability of Infinite Dimensional Systems by Finite
Dimensional Control, Raymond, Jean-Pierre

7. An Explicit-Implicit Splitting Method for a Convection-Diffusion
Problem, Thomee, Vidar / Vasudeva Murthy, A.S.

8. Positivity Preserving Gradient Approximation with Linear Finite
Elements (free access), Veeser, Andreas

9. An Elementary Method of Deriving A Posteriori Error Equalities and
Estimates for Linear Partial Differential Equations, Anjam, Immanuel /
Pauly, Dirk

10. Estimation of the Time-Dependent Body Force Needed to Exert on a
Membrane to Reach a Desired State at the Final Time, Boyadjiev,
Lyubomir / Rashedi, Kamal / Sini, Mourad

11. Mixed Schemes for Fourth-Order DIV Equations, Fan, Ronghong / Liu,
Yanru / Zhang, Shuo

12. Improved Analysis and Simulation of a Time-Domain Carpet Cloak
Model, Li, Jichun / Meng, Chen / Huang, Yunqing

13. The Boundary Effect in the Accuracy Estimate for the Grid Solution
of the Fractional Differential Equation, Makarov, Volodymyr / Mayko,

From: Yonghui Yu
Date: March 29, 2019
Subject: Contents, Journal of Computational Mathematics, 37 (2)

Journal of Computational Mathematics, Volume 37 (2019), Issue 2

A General Class of One-step Approximation for Index-1 Stochastic
Delay-differential-algebraic Equations, Tingting Qin and Chengjian

Singularity-free Numerical Scheme for the Stationary Wigner Equation,
Tiao Lu and Zhangpeng Sun

C0 Discontinuous Galerkin Methods for a Plate Frictional Contact
Problem, Fei Wang, Tianyi Zhang and Weimin Han

An Improved Variational Model and Its Numerical Solutions for Speckle
Noise Removal from Real Ultrasound Images, Noppadol Chumchob and
Isararat Prakit

A Block Lanczos Method for the CDT Subproblem, Liqiang Song and
Weihong Yang

Extrapolation Methods for Computing Hadamard Finite-part Integral on
Finite Intervals , Jin Li and Hongxing Rui

Improved PMHSS Iteration Methods for Complex Symmetric Linear Systems,
Kai Liu and Guiding Gu

From: Claude Brezinski
Date: March 26, 2019
Subject: Contents, Numerical Algorithms, 80 (4)

Table of Contents
Numerical Algorithms, Vol. 80, No. 4

C. Clavero, J.L. Gracia, Uniformly convergent additive schemes for 2d
singularly perturbed parabolic systems of reaction-diffusion type

Yangyang Xu, Ruijuan Zhao, Bing Zheng, Some criteria for identifying
strong H -tensors

Li-Dan Liao, Guo-Feng Zhang, A note on block diagonal and block
triangular preconditioners for complex symmetric linear systems

G. Zamani Eskandani, M. Raeisi, On the zero point problem of monotone
operators in Hadamard spaces

Gaohang Yu, Yisheng Song, Yi Xu, Zefeng Yu, Spectral projected
gradient methods for generalized tensor eigenvalue complementarity

Zhaoli Ma, Lin Wang, Shih-sen Chang, On the split feasibility problem
and fixed point problem of quasi phi-nonexpansive mapping in Banach

Yair Censor, Howard Heaton, Reinhard Schulte, Derivative-free
superiorization with component-wise perturbations

Luca Dieci, Alessandra Papini, Alessandro Pugliese, Coalescing points
for eigenvalues of banded matrices depending on parameters with
application to banded random matrix functions

Philip A. Ernst, Fazlollah Soleymani, A Legendre-based computational
method for solving a class of Ito stochastic delay differential

Duong Viet Thong, Dang Van Hieu, Inertial subgradient extragradient
algorithms with line-search process for solving variational inequality
problems and fixed point problems

Leila Lebtahi, Oscar Romero, Nestor Thome, Further results on
generalized centro-invertible matrices

Yao Cheng, Optimal error estimate of the local discontinuous Galerkin
methods based on the generalized alternating numerical fluxes for
nonlinear convection-diffusion equations

Stefan Metzger, On stable, dissipation reducing splitting schemes for
two-phase flow of electrolyte solutions

Ping Guo, Chong-Jun Li, Almost sure stability with general decay rate
of exact and numerical solutions for stochastic pantograph
differential equations

Dang Van Hieu, New inertial algorithm for a class of equilibrium

Maolin Liang, Bing Zheng, Ruijuan Zhao, Alternating iterative methods
for solving tensor equations with applications

End of Digest