NA Digest Monday, February 13, 2012 Volume 12 : Issue 07

Today's Editor:
Daniel M. Dunlavy
Sandia National Labs

Submissions for NA Digest:

Mail to

Information via email about NA-NET:

Mail to


From: Ivan Oseledets <>
Date: Wed, 8 Feb 2012 13:42:05 -0500
Subject: TT-Toolbox (TT=Tensor Train) Version 2.2

TT-Toolbox (TT=Tensor Train) Version 2.2

TT(Tensor Train) format is an efficient way for low-parametric
representation of high-dimensional tensors. The TT-Toolbox
is a MATLAB implementation of basic operations with
tensors in TT-format. It includes:

- tt_tensor and tt_matrix classes for storing vectors and operators
- Basic linear algebra subroutines (addition, matrix-by-vector
product, elementwise multiplication and many others) using standard
MATLAB syntax, linear complexity in the dimension, reshape function
- Fast rounding procedure with a prescribed accuracy
- Advanced approximation and solution techniques:
- Approximate solution of linear systems and eigenvalue problems
- Cross methods to approximate ``black-box'' tensors
- Wavelet tensor train decomposition
- Construction of basic operators and functions (Laplace operator,
function of a TT-tensor)
- Computation of maximal and minimal elements of a tensor
- and several others

New in Version 2.2
* Better documentation
* Mixed QTT-Tucker format (qtt_tucker class)
* reshape function for a TT-tensor/TT-matrix
* dmrg_cross method for black-box tensor approximation
* Convolution in QTT-format

TT-Toolbox 2.2. can be downloaded from


From: "A. EL JAI" <>
Date: Mon, 06 Feb 2012 08:44:20 +0100
Subject: New Book, Systems Theory

SYSTEMS THEORY : Regional Analysis of Infinite Dimensional Linear
Authors A. EL JAI, L. AFIFI and E. ZERRIK
2012 / xx + 425 pages / Softcover / ISBN 978-2-35412-140-2
Price 49 € /

This book fills a gap between theory-oriented investigations in
systems theory and practical motivations and approaches to usual
concepts in linear distributed parameter systems. Since distributed
parameter systems evolve in time and space, the research
investigations on their analysis and control focus on considering the
whole system domain for any study. We feel strongly that within this
research field, an important consideration was missing; that of
considering that the system may give raise to prescribed subdomains
(regions) where one has to achieve an objective. This is the case of
so many applications ranging from engineering to life sciences. For
that reason, covering classical prerequisite in analysis and control
areas, we have devoted the book to the extension of the classical
distributed parameter results to regional ones.

This book may be used by graduate students in mathematics,
engineering, physics, and even by students from other fields such as
life or environmental sciences. This book may also be used as an
information source for researchers and education professionals. We
assume that the readers already know the basic concepts of analysis
and control of distributed parameter systems.

To order, or for more information about this or other books by the
authors, or


From: Gil Strang <>
Date: Thu, 9 Feb 2012 10:39:57 -0500
Subject: New Book, Essays in Linear Algebra

Essays in Linear Algebra, by Gilbert Strang, Wellesley-Cambridge Press
January 2012, x + 342 pages, ISBN 978-09802327-6-9.

This book brings together 27 articles by Gilbert Strang, each
introduced by a new essay. The essays present historical background,
the current state, and related problems that are still unsolved.
Examples are

- The Four Fundamental Subspaces and the SVD
- Pascal's triangle in three matrices
- Banded matrices have remarkable inverses
- Toeplitz matrices and circulants
- Eight Discrete Cosine Transforms
- The joint spectral radius of A and B
- Wavelets and dilation equations and filter banks
- The Strang-Fix conditions and finite element accuracy
- Presenting e^x and the Fundamental Theorem of Calculus

To order, please visit This book will be
available also from (in North America) and Cambridge
University Press (outside).


From: Julie Haenisch <>
Date: Thu, 9 Feb 2012 10:05:09 -0500
Subject: New Books from Princeton University Press

In Pursuit of the Traveling Salesman:
Mathematics at the Limits of Computation
William J. Cook

Nine Algorithms That Changed the Future:
The Ingenious Ideas That Drive Today's Computers
John MacCormick (foreword by Chris Bishop)

Who's #1? The Science of Rating and Ranking
Amy N. Langville & Carl D. Meyer

Fascinating Mathematical People: Interviews and Memoirs
Edited by Donald J. Albers & Gerald L. Alexanderson
With a foreword by Philip J. Davis

A Community of Scholars:
Impressions of the Institute for Advanced Study
Institute for Advanced Study

Number-Crunching: Taming Unruly Computational Problems from
Mathematical Physics to Science Fiction
Paul J. Nahin

The Best Writing on Mathematics 2011
Edited by Mircea Pitici (foreword by Freeman Dyson)

Functional Analysis: Introduction to Further Topics in Analysis
Elias M. Stein & Rami Shakarchi

Magical Mathematics:
The Mathematical Ideas that Animate Great Magic Tricks
Persi Diaconis & Ron Graham (foreword by Martin Gardner)


From: Robert Speck <>
Date: Fri, 10 Feb 2012 05:01:52 -0500
Subject: Barnes-Hut Tree Codes, Switzerland, Mar 2012

Workshop on "Exploiting Modern High Performance Architectures with
Barnes-Hut Tree Codes", Univ of Lugano (Switzerland), March 20, 2012

Despite rapid development in supercomputer performance over the last
three decades, solving the N-body problem with direct summation and
O(N^2) complexity is and will be unfeasible for real-life
applications. Since hardware acceleration and/or parallelism can
postpone but never remove the bottleneck implied by such an
algorithmic complexity, much attention has been devoted to rapid
summation techniques such as the Barnes-Hut tree code. In this
workshop, we present and discuss new ideas aiming at the full
exploitation of modern and upcoming high performance architectures.

- Paul Gibbon, Jülich Supercomputing Centre, PEPC group
- Tom Quinn, University of Washington, ChaNGa group
- Volker Springel, Heidelberg Institute for Theoretical Studies,
GADGET group
- Joachim Stadel, University of Zürich, PKDGRAV2 group

Contact: Robert Speck
Institute of Computational Science, University of Lugano
+41 58 666 4974,

Visit our website for more information:


From: Stefan Lang <>
Date: Thu, 9 Feb 2012 14:58:24 +0100
Subject: DUNE Spring Course, Germany, Mar 2012

The Distributed and Unified Numerics Environment (DUNE) is a software
framework for the numerical solution of partial differential equations
with grid-based methods. Using generic programming techniques it
strives for both high flexibility (efficiency of the programmer) and
high performance (efficiency of the program). DUNE provides, among
other things, a large variety of local mesh refinement techniques, a
scalable parallel programming model, an ample collection of finite
element methods and efficient linear solvers.

This one week course will provide an dense introduction to the most
important DUNE modules. At the end the attendees will have a solid
knowledge of a typical simulation workflow from mesh generation and
implementation of finite element and finite volume methods to
visualization of computed results. Successful participation requires
knowledge of object-oriented programming using C++ including generic
programming with templates. A solid background on numerical methods
for the solution of PDEs is expected.

Up to now there are some places left, feel free to register for this
introductionary course with practical exercises from both academia as
well as R&D.

Registration deadline: Sunday February 26 2012
Dates: March 19 2012 - March 23 2012

Course venue: Interdisciplinary Center for Scientific Computing
University of Heidelberg, Im Neuenheimer Feld 350/368
69120 Heidelberg, Germany

For registration and further information see


From: Wil Schilders <>
Date: Thu, 9 Feb 2012 13:07:35 -0500
Subject: Solution of Indefinite Systems, The Netherlands, Apr 2012

This 1-day workshop will take place at TU Eindhoven on April
17. Invited speakers are:
- Michele Benzi (Emory State University, Atlanta, USA): “New block
preconditioners for saddle point problems”
- Andy Wathen (Oxford University, UK): “Combination Preconditioning of
saddle- point systems for positive definiteness”
- Miroslav Rozloznik (Academy of Sciences, Prague, CZ):
“Implementation and numerical stability of saddle point solvers”
- Marc Baboulin (University Paris-Sud, Paris, FR): “A parallel tiled
solver for dense symmetric indefinite systems on multicore
- Luca Bergamaschi (University of Padua, IT): “Relaxed mixed
constraint preconditioners for Ill-conditioned symmetric saddle
point linear systems”

Participation is free of charge, but registration is mandatory. Please
send an e-mail to before April 10, 2012. There
is a limited number of time slots available for short (5, 10 or 15
minute) presentations, please include your proposal (title, abstract,
duration) in the e-mail.

This workshop brings together experts on the continuous and discrete
formulation of saddle point problems from several areas of computational
science, both for specific and general problems, and on efficient (parallel)
solution techniques for the resulting systems of equations. This workshop
will be useful both to researchers dealing with applications that give rise
to saddle point problems and to developers of effective solution techniques
for the resulting equations.


From: Pavel Solin <>
Date: Mon, 6 Feb 2012 14:49:10 -0800
Subject: ESCO 2012, Czech Republic, Jun 2012

European Seminar on Computing (ESCO 2012) will be held on June 25 -
29, 2012 in the historical premises of the Pilsner Urquell Brewery in
Pilsen, Czech Republic. ESCO 2012 is the 3rd event in a series of
interdisciplinary meetings dedicated to modern methods and practices
of scientific computing.

Due to a high interest, we have expanded the size of the conference.
Individual presentations as well as minisymposia proposals are still
welcome. The list of participants as well as the list of current
minisymposia can be found on the conference web page

Main thematic areas for 2012 include: Multiphysics coupled problems,
Higher-order computational methods, Computing with Python, GPU
computing, and Cloud computing.

Theoretical results as well as applications are welcome. Application
areas include, but are not limited to: Computational electromagnetics,
Civil engineering, Nuclear engineering, Mechanical engineering,
Nonlinear dynamics, Fluid dynamics, Climate and weather modeling,
Computational ecology, Wave propagation, Acoustics, Geophysics,
Geomechanics and rock mechanics, Hydrology, Subsurface modeling,
Biomechanics, Bioinformatics, Computational chemistry, Stochastic
differential equations, Uncertainty quantification, and others.

Invited keynote speakers include
* John Butcher (Massey University, New Zealand)
* Michael Gee (TU Muenchen, Germany)
* Michael Heroux (Sandia National Laboratory, USA)
* Lois Curfman McInnes (Argonne National Laboratory, USA)
* Stan Posey (NVIDIA, USA)


From: Paul Boeck <>
Date: Wed, 8 Feb 2012 09:11:33 -0500
Subject: Berlin PUM Workshop, Germany, Aug 2012

There will be a workshop entitled "Berlin PUM Workshop 2012" from
August 22nd to 24th, 2012 in Berlin, Germany. The aim of this workshop
is to provide an opportunity for researchers and practitioners to
discuss recent research results that may support a wide applicability
in PUM related approaches. To build a foundation for these
discussions, a number of experts has been invited to talk about their
research. The covered topics will range from theoretical analysis of
PUM based methods to applications and aspects of implementation.
Anybody interested to participate is cordially invited to join the
discussions and to give a presentation on his/her own research.

The invited speakers are:
Uday Banerjee (Syracuse University, USA)
Stéphane Bordas (Cardiff School of Engineering, UK)
Armando Duarte (University of Illinois, USA)
Thomas Fries (RWTH Aachen, Germany)
Markus Melenk (TU Wien, Austria)
Yves Renard (INSA de Lyon, France)
Alexander Schweitzer (Universität Stuttgart, Germany)

For more details please visit

If you have any questions beyond the information available on the
workshop website, please do not hesitate to contact the organizers via

With kind regards from the organizers of the Berlin PUM Workshop 2012,
Andreas Byfut, Martin Eigel, Andreas Schröder
PS. We would be glad, if you could forward this email to anybody who
might be interested to participate.


From: Gerlind Plonka-Hoch <>
Date: Wed, 8 Feb 2012 02:28:40 -0500
Subject: Advances in Image Processing, Germany, Sep 2012

We invite you to participate in the workshop on

"Advances in Image Processing"

from September 04 - 06, 2012, in the "Waldschloesschen" near
Goettingen, Germany. The goal of the workshop is to bring together
young researchers from different areas of mathematical image analysis
as e.g. harmonic analysis, inverse problems, variational analysis,
mathematical statistics, PDEs, optimization and approximation theory.

Information about the scope and goals of the workshop, as well as
travel, housing, and the program can be found at

The registration form on the workshop homepage needs to be filled out
and returned to the organizers before

July 1, 2012.

Due to the venue and the goals of the workshop the number of
participants is limited to 50.

Please feel free to distribute this announcement amongst your
colleagues and students.

We are looking forward to seeing you in Goettingen!

With kind regards,
Russell Luke and Gerlind Plonka-Hoch


From: Vincent Acary <>
Date: Tue, 7 Feb 2012 11:12:20 -0500
Subject: Nonsmooth Contact and Impact Mechanics, France, Sep 2012

A summer school on Nonsmooth Contact and Impact Mechanics is organized
from September 10 to 14 at Aussois in the French Alpes. The main focus
of the school will be on modeling and numerical/simulation aspects,
and the following topics will be covered:

Algorithms for contact detection in time-stepping numerical methods
Convergence of time-stepping methods
Multiple impacts in multibody systems
Painlevé paradoxes
Waves in chains of balls
Simulating large fiber assemblies such as hair

For more details concerning the program, the speakers, and the
registration, please visit the web site :

The school is primarily intended to all researchers and engineers
working in the field of Contact or Impact Mechanics, is also of
interest to other scientific communities where such tools are used
(robotics, computer graphics, haptic simulation, automatic control,
applied mathematics).

It's noteworthy that in order to encourage PhD and post-doc students
to attend the school, the registration fees have been set at a very
low level.


From: "Theodore E. Simos" <>
Date: Wed, 8 Feb 2012 16:16:27 -0500
Subject: Intl Conf NA and Applied Math, Kos, Greece, Sep 2012

2012 (ICNAAM 2012), Kypriotis Hotels and Conference Center, Kos,
Greece, 19-25 September 2012. URL address:

We will celebrate the 70th birthday of Professor Gerhard Wanner.

Invited speakers: Gerhard Wanner (Switzerland), Assyr Abdulle
(Switzerland), Luigi Brugnano (Italy), John C. Butcher (New Zealand),
Philippe Chartier (France), Ernst Hairer (Switzerland), Martin Hairer
(UK), Dietmar Hildenbrand (Germany), Tobias Jahnke (Germany),
Christian Lubich (Germany), Alexander Ostermann (Austria), Chus
Sanz-Serna (Spain), Ruggero Maria Santilli (U.S.A.), Andrew Stuart
(UK), Denis Talay(France)

The aim of ICNAAM 2012 is to bring together leading scientists of the
international Numerical & Applied Mathematics community and to attract
original research papers of very high quality. The topics to be
covered include (but are not limited to): All the research areas of
Numerical Analysis and Computational Mathematics and all the research
areas of Applied Mathematics: (see

For details on the subjects and descriptions of the Symposia within
ICNAAM 2012, please see the web page Call for papers and
Symposia: You are invited to submit a paper and/or a proposal to
organize a symposium (See for details).

Contact information: Secretary ICNAAM, E-mail:
and a carbon copy to the e-mail address:,
Postal Address: 10 Konitsis Street, Amphithea-Paleon Phaleron, GR-175
64, Athens, Greece, Fax: +30210 94 20 091


From: Marcel Mongeau <>
Date: Mon, 06 Feb 2012 13:36:25 +0100
Subject: Special Issue in Optimization, JOCA and RAIRO-OR

A special issue of both the Journal of Convex Analysis and
RAIRO-Operations Research will be edited following the 15th
Austrian-French-German Conference on Optimization (AFG'11).

Submission is open to any contribution in the fields covered by the
conference (and not only to the actual participants).

The AFG'11 was the 15th of a series of French-German meetings which
started in Oberwolfach in 1980. The last edition was organized jointly
with Austria, and took place in Toulouse last September (for more
detail, see:

Those who wish to submit a paper for one of these special issues must
follow the usual submission process of each journal, mentioning that
their contribution is intended for the AFG'11 special issue:


Submission deadline for both issues: June 30, 2012.

Looking forward to reading your latest research works,

G. Buttazzo L. Thibault R.J-B Wets
Managing Editors of JOCA

A.R. Mahjoub
Editor-in-Chief of RAIRO-OR

Ph. Mahey P. Maréchal M. Mongeau
Guest editors for the RAIRO-OR special issue


From: "Wang Li-Lian (Asst Prof)" <>
Date: Mon, 6 Feb 2012 13:38:41 +0800
Subject: Faculty Position, Sci Comp/NA, Nanyang Tech Univ

Faculty Positions: Scientific Computation and Numerical Analysis at
Nanyang Technological University in Singapore

The Division of Mathematical Sciences (
of the Nanyang Technological University (NTU), Singapore, is looking
to add to its tenure-track faculty at all ranks. We encourage strong
candidates in the areas of Scientific Computation and Numerical
Analysis to apply.

NTU is a research university, with low teaching loads, excellent
facilities, ample research funding and support for conference
travel. The Division of Mathematical Sciences consists of active and
talented faculty members working in a variety of areas. Its student
body includes some of the best in the region. It offers undergraduate
programs in mathematical sciences and mathematics & economics, and a
graduate program awarding Masters and PhD degrees. Salary and benefits
are competitive with the top universities around the world.

We seek people with excellent achievements in both research and
teaching. Interested candidates are requested to send the following
material to

* Application Letter
* Curriculum Vitae
* Research Statement
* Teaching Statement
* Names of at least three referees


From: Elizabeth Mansfield <>
Date: Tue, 07 Feb 2012 15:49:02 +0000
Subject: 3 Maths Lectureships, Univ of Kent, UK

There are three permanent maths lectureships at the University of Kent
(UK) now being advertised. Geometric integration and related
numerical analysis come into the range of research areas being

Elizabeth Mansfield
Professor of Mathematics
University of Kent


From: Mike Peardon <>
Date: Mon, 13 Feb 2012 06:12:14 -0500
Subject: Hitachi Asst Professor, HPC, Trinity College Dublin

Trinity College Dublin is seeking to appoint the Hitachi Assistant
Professor, to be held in the School of Mathematics. The candidate is
expected to have a Ph.D. in applied mathematics or a similar
discipline at the time of application and a strong track-record of
research in applied mathematics, particularly in one or more of the
areas of numerical analysis, computational algorithm design and
high-performance computing and its applications.

The School of Mathematics has research interests that include
large-scale numerical simulations of physical and complex systems. An
Assistant Professor is to be appointed to support and develop this
research activity and other activities in the scientific domain. The
School runs an M.Sc. programme in High-Performance Computing that aims
to train graduate students in the application of advanced methods and
algorithms to large-scale problems in numerical simulation.

Details on how to apply are available at

The appointment is for five years at a pay scale in line with current
Government Pay Policy. The closing date for applications is Friday,
30th March 2012, although late applications may be accepted. Informal
enquiries regarding the position can be made to Dr. Mike Peardon


From: "Langel, Carmen M" <>
Date: Tue, 7 Feb 2012 19:58:16 +0000
Subject: Asst Research Scientist Position, Univ of Iowa

IIHR-Hydroscience & Engineering, THE UNIVERSITY OF IOWA, has an
immediate opening for an Assistant Research Scientist. The candidate
will be responsible for conducting research in experimental fluid
dynamics. A Ph.D. in mechanical or aerospace engineering, or a
closely related field with considerable work experience is required.
For a full position description and list of required and desired
qualifications, visit our website at and refer
to requisition #60500. The University of Iowa is an equal
opportunity, affirmative action employer and encourages applications
from women and minorities.

Carmen M. Langel
Director of Development and Communications
IIHR-Hydroscience & Engineering
University of Iowa
107b SHL
Iowa City, IA 52242 USA
Phone: 319 335-5841
Web: ,


From: "Fathalla A. Rihan" <>
Date: Mon, 6 Feb 2012 10:12:06 -0500
Subject: Postdoc Position, United Arab Emirates Univ

One position is available for full time Post-Doctorate in the project
”Delay Differential Models in immunology and Infection Diseases in an

The duration of the project is 24 months. Many mathematical models
related to bioscience problems are governed by differential equations
that depend in part on the history rather than only the current
state. Delay Differential Equations (DDEs) are qualitatively and
quantitatively consistent with the phenomena mentioned above. They
also have rich mathematical framework compared with ordinary
differential equations. Our central concern is to investigate the
role of delay differential equations that plays in modelling immune
system and the infection diseases interactions. The research in this
project is focused on immunological dynamics for bacterial infections
and transmission of the diseases in humans. The research has three
directions: (i) To develop some mathematical models to represent the
dynamics of E.coli and Salmonella bacterial growth in a host; (ii) To
study interactions of antigens and immune system in an infected person
by a viral or bacterial disease; (iii) To find a best-fit mathematical
model that provides an accurate approximation to the observed (or
experimental) data. The models will be based on a wide range of delay
differential models.

Duties of the researcher: Collect available data related to Ecoli and
Salmonella bacterial infections, fit the data to the existing ODEs and
DDEs models and study sensitivity analysis and qualitative behavior of
the models.

Qualification: The applicant should have a PhD in
Mathematics. Familiar with Matlab and Fortran. Experience in
mathematical modelling, numerical treatments of ODEs and DDEs, and
parameter estimations with given real data and differential models.
Salaries and benefits will be granted according to the UAE University

Contact Person: Dr Fathalla Rihan, Principal Investigator, Department
of Mathematical Sciences, Faculty of Science, UAE University,
Al Ain 17551, UAE
Telephone: 00971 506603324


From: crmcalls <>
Date: Mon, 6 Feb 2012 09:19:15 +0100
Subject: PhD/Postdoc Positions, CRM, Spain

The Centre de Recerca Matemàtica (CRM, is seeking
to incorporate Ph.D students and postdoctoral researchers to the
following research group:

Complex Systems (PI, Álvaro Corral)
Computational and Mathematical Biology (PI, Tomás Alarcón)
Industrial Mathematics (PI, Tim Myers)
Harmonic Analysis and Approximation Theory (PI, Sergey Tikhonov)
Numerical Analysis and Scientific Computing (PI, Blanca Ayuso)
Computational Neuroscience (PI, Alexander Roxin)
Mathematical Epidemiology (PI, Andrei Korobeinikov)

Candidates with a strong interest in any of the above areas and an
outstanding academic record are encouraged to submit an application by
e-mail including their CV, academic record and an expression of iterst
to<>, writing "CRM postdoc
call" or "CRM PhD call" in the subject, not later than February 17,
2012. Candidates should arrange for two recommendation letters to be
sent directly to the same address.

Centre de Recerca Matemàtica
Campus de Bellaterra, Edifici C
08193 Bellaterra (Barcelona)
Tel.: + 34 93 581 10 81
Fax: + 34 93 581 22 02


From: Xing Cai <>
Date: Sun, 12 Feb 2012 02:18:00 -0500
Subject: PhD/Postdoc Positions, Simula Research Lab, Norway

Dear colleagues,

There are currently two open positions at Simula Research Laboratory,
both in the field of high-performance scientific computing:

1. One 3-year PhD student position
2. One 4-year post-doc position

Deadline for applications: March 23rd, 2012.

Xing Cai, PhD
Simula Research Lab & University of Oslo


From: Claude Brezinski <>
Date: Sun, 12 Feb 2012 08:19:15 +0100
Subject: Contents, Numerical Algorithms, 59(3)

Table of contents for Numerical Algorithms, Volume 59, Number 3.

An algorithm for second order initial and boundary value problems with
an automatic error estimate based on a third derivative method, Samuel
N. Jator, Jiang Li

A parallel algorithm based on convexity for the computing of Delaunay
tessellation, Phan Thanh An, Le Hong Trang

An adaptive algorithm for the Thomas–Fermi equation, Shengfeng Zhu,
Hancan Zhu, Qingbiao Wu, Yasir Khan

Quadratic spline solution for boundary value problem of fractional
order, Waheed K. Zahra, Samah M. Elkholy

A more accurate Briggs method for the logarithm, Awad H. Al-Mohy

Efficient calculation of the worst-case error and (fast)
component-by-component construction of higher order polynomial lattice
rulesm, Jan Baldeaux, Josef Dick, Gunther Leobacher, Dirk Nuyens,
Friedrich Pillichshammer

A new Tikhonov regularization method, Martin Fuhry, Lothar Reichel

Acceleration of generalized hypergeometric functions through precise
remainder asymptotics, Joshua L. Willis

Subquadrature expansions for TSRK methods, Anne Kvaerno, J. H. Verner

End of NA Digest