MathMAC seminar will be held on 26.6.2017. The location and the detailed schedule are here.

Everybody is welcome.

# Category Archives: News

# ESSAM School on Mathematical Modelling, Numerical Analysis and Scientific Computing

Date: 29/05/2016 – 03/06/2016

Place: Kácov, Czech Republic

The aim of the school is to promote the** interconnection of mathematical modeling, analysis, and computational methods used in solving ****complex (real-world) problems**. The lectures will be prepared with a broad multidisciplinary audience in mind, and at each school a broad scope, ranging from modeling to scientific computing, will be covered. Usually four main speakers deliver a series of three lectures. Ample time within the school is allocated for the promotion of informal scientific discussions among the participants.

Speakers and topics of the 2016 school are:

**Peter Bastian****(Universität Heidelberg, Germany)**, [Simulation of Multiphase Flows in Porous Media].**Jörg Liesen (Technische Universität Berlin, Germany)**, [Krylov subspaces. Classical mathematics, iterative methods, and surprisinglinks].**Jan Mandel (University of Colorado at Denver, USA)**, [Probability on spaces of functions, with applications to inverse problems and dataassimilation].**Richard Katz (University of Oxford, UK)**, [Two-phase fluid dynamics of partially molten rock: fundamentals and application to the Earth].

The school is organized under the auspices of the European Mathematical Society (EMS) and Faculty of Mathematics and Physics, Charles University in Prague (MFF UK), as an activity of the Nečas Center for Mathematical Modeling. Participants will have a possibility to present a short communication (maximally 10 minutes in the dependence on the number of

participants contributing to this kind of activity).

The deadline for registration and submission of abstracts is May 2, 2016.

Registration is now open at http://essam-masc.cuni.cz/ including the additional information about the venue, program and deadlines.

# Annual seminar (updated)

Autumn MathMAC seminar will be held on 7.12.2015, 8:10 (-11:20). Everybody is welcome.

Details will be announced later.

Update:

The talk of Ondrej Kurka will be on 30.11.2015 at 10:10 in K3.

The rest of the speakers will talk according to Schedule

# Annual seminar

Spring MathMAC seminar will be held on 19.5.2015, 8:30 (-13:20). Everybody is welcome.

See programme here: Schedule

# 25 years of cooperation with Ruprecht-Karls-Universität

We are celebrating with pride 25 years anniversary of partnership and cooperation between Charles University and Ruprecht-Karls-Universität.

Invitation to ceremony + programme of workshop

# PhD studies in Italy

SISSA offers PhD position to highly motivated and exceptional students. For more information see: http://www.sissa.it/

Deadline is on 31.3.

# Invitation to Geometric Analysis Seminar

The Geometric Analysis Seminar will take place on **31.3.** at **10:40** in the lecture room **K4**.

**Speaker**: Carlos Mora-Corral

**Title**: Existence of solutions in peridynamics and convergence to classical elasticity

**Abstract**: Peridynamics is a model in Solid Mechanics formulated by S. Silling in 2000. Its main difference with the usual Cauchy-Green elasticity relies in its non-locality, which reflects the fact that particles at a positive distance exert an interaction force upon each other. Mathematically, the deformations are not assumed to have weak derivatives, in contrast with hyperelasticity, where they are assumed to be Sobolev. In this talk we study the variational theory of time-independent problems in peridynamics. In this formulation, the energy of a deformation is expressed as a double integral, and resembles the energy functional of a nonlocal singular p-Laplacian. In particular, we will explain optimal conditions over the integrand guaranteeing that the energy admits a minimum, and, hence, that the problem has an equilibrium solution. Moreover, we will see how the Cauchy-Green elasticity theory can be recovered from this nonlocal theory as a Gamma-limit when the interaction distance tends to zero.

# Vědecká stipendia pro studenty doktorského studia

### Univerzitní centrum matematického modelování, aplikované analýzy a výpočtové matematiky MathMAC

vypisuje

**5 vědeckých stipendií
**pro studenty doktorského studia na období

1. 4. - 31. 12. 2014

Předpokládaná výše stipendia je 3 až 5 tisíc Kč měsíčně.

Předpoklady:

- téma disertace blízké vědeckým záměrům MathMAC
- aktivní přístup podporující spolupráci mezi matematickými obory
- zájem o akce MathMAC

Životopis, seznam publikací a krátký motivační dopis (nejvýše 1 strana A4) zašlete do 31. 3. 2014 na adresu peskova@karlin.mff.cuni.cz

Studenti, kteří v loňském roce toto stipendium získali, navíc popíší dosažené výsledky.

Uchazeči mohou být pozváni ke krátké prezentaci jejich výzkumu.

# 2014 home events

1. AIME@CZ - workshop on applied mathematics and engineering, 11-12 March 2014. See: AIME

2. Workshop: Regularity theory for elliptic and parabolic systems and problems in continuum mechanics, Telc, 30. April - 3. May 2014. See: http://www.karlin.mff.cuni.cz/

3. Conference: Modelling 2014, Roznov pod Radhostem, 2.-6. June 2014. See: http://www.ugn.cas.cz/link/mod

4. Workshop: Particles in flow, Prague, 25.-31. August 2014. See: PragueSum_2014_announcement_pitt

5. Conference: Modelling, analysis and computing in nonlinear PDEs, Liblice, 21.-26. September 2014. For more info see: **more**.karlin.**mff**.cuni.cz/

# Semester Seminar

Semester seminar of MathMAC will be held in Sokolovska 83, Prague, room K6, on November 18, 2013. Everybody is warmly welcome.

Program: schedule

# Talks by M. Kuchta and M. Mortensen (Seminar on Geodynamics)

SEMINAR ON GEODYNAMICS (for more details see http://geo.mff.cuni.cz/seminarGeod.htm)

On 13.11.2013 presents:

14:00 | Miroslav Kuchta (Department of Mathematics, University of Oslo): Eikonal equation on unstructured meshes |

15:40 | Mikael Mortensen (Department of Mathematics, University of Oslo): FEniCS and its application in biomedical computing |

# Annual seminar is coming

Dear friends, annual seminar of MathMAC will be held in Sokolovska 83, Prague, room K4, on 2nd December 2013. Everybody is warmly welcome.

Program: schedule

# First meeting in New Year

First meeting will be held in K4 (14 October, 10:00 - after MORE seminar). Main topics of the discussion will be regular meetings and annual seminar.

Happy New (academic) Year.

# MathMAC seminar

On 20th May, 8:30 at Sokolovska 83, Prague, room K4 will take place the seminar of MathMAC UNCE project. Junior researchers will present their newest results and they will partly continue to outline the fields of their research.

Everybody is welcome.

Programme: Schedule

# Inaugural seminar of Necas Center for Mathematical Modeling

Necas Ceter for Mathematical Modeling (NCMM) is a research platform whose ambition is to coordinate and support research and education activities of several Czech Republic based research teams working in theoretical and applied mathematics. On 2.5. 2013 at 14:00 in refectory, Malostranské náměstí 25, Praha 1 the opening ceremony will be held. Since NCMM is important partner center of our UNCE, it is expected that the members will participate on.

For the details see: pozv_NC_05-2013

The link to the webpage of the center is : Nečas Center for Mathematical Modeling

# First announcement of UNCE seminar

According to the discussion, UNCE seminar will be held on 20.5. at 8:30 in K4, Karlin. It is possible that changes still may happen.

# Day with Physics

Václav Kučera, Luboš Pick and Vít Průša will deliver lectures at Day with Physics. The lectures will be delived in Czech and the titles are the following "Simulace (nejen) fyzikálních jevů na počítači", "Čísla oblíbená i neoblíbená a další matematické kuriozity, aneb jak nás matfyzáky vidí svět a hlavně kam nás vede klamná 'vědecká' intuice" and "Teplo, nevratnost a čas".

For more information, please visit the webpages of the event.

# MathMAC annual seminar

On 12th December, 14:00 at Sokolovska 83, Prague, room K6 will take place the seminar of MathMAC UNCE project. Junior researchers will present their newest results and they will partly outline the fields of their research.

Everybody is welcome.

Programme:

# Tomas Barta will give a talk at TU Dresden

Our junior researcher Tomas Barta will give a talk "Viscoelastic model

with strain depending on the history of stress" at seminar "Oberseminar

Analysis" at Technische Universitaet Dresden. The siminar is held on 8.11.2012 at 15:15.

# Ondrej Kurka will give a talk

Ondrej Kurka (our Junior fellow) solved interesting problem stated by Hajlasze and Onninena about variation of Hardy-Littlewood maximal function. The result will be presented on 10.10.2012 at 15:40 at the seminar of real and abstract analysis - MFF UK, Sokolovska 83, lecter room K2 .

Inviting poster (in czech) raaoznam

# New seminar “Modelling of materials — theory, model reduction and efficient numerical methods”

A new seminar Modelling of materials -- theory, model reduction and efficient numerical methods has been founded in connection with the project ERC-CZ MORE. Some MathMac meetings will be held as integral part of this seminar. Everybody is welcome to join the seminar.

# Miroslav Bulíček has been awarded by NFKJ grant

Miroslav Bulíček has been awarded by a grant from NFKJ (Nadační fond Karla Janečka), see the press release. The topic of the supported research is "Qualitative analysis of incompressible Navier--Stokes--Fourier equations" (Kvalitativní analýza nestlačitelných Navierových-Stokesových-Fourierových rovnic). Congratulations!

# What we are (also) interested in — a paper in popular science journal

Josef Málek and Vít Průša have published a popularizing paper on modelling of non-newtonian fluids Nejdéle trvající vědecký experiment in Czech popular science journal Vesmír.

# Invited talks at the Annual Meeting of the German Mathematical Society

Tomáš Bárta and Vít Průša have delivered invited talks at the Annual Meeeting of the German Mathematical Society. The titles of the talks were "Chemicaly reacting viscoelastic fluids" (Tomáš Bárta) and "Implicitly constituted material models" (Vít Průša). Both talks were part of mini-symposium "Complex fluids".

# Model reduction in continuum thermodynamics: Modeling, analysis and computation

In September we (Josef Málek) have organized a workshop in Banff International Research Station for Mathematical Innovation and Scientific Discovery (Banff, Alberta, Canada). The title of the workshop is Model reduction in continuum thermodynamics: Modeling, analysis and computation. Workshop videos (video recordings of the talks) are available here.

# 6th European Congress of Mathematics: Minisymposium on implicitly constituted material models

We are proud to announce that we (Josef Málek, Charles University in Prague and Endre Süli, University of Oxford) will be organizing minisymposium **Implicitly constituted material models: modeling and analysis**. The minisymposium will be a part of the 6th European Congress of Mathematics which will take place on July 2-7, 2012 in Krakow.

The objective of the minisymposium is to:

- introduce the
**implicit constitutive theory**which is a new framework for developing**material models in continuum mechanics**, - show that the new framework leads to systems of
**partial differential equations**that have very interesting structure, - discuss challenging
**mathematical issues**related to the newly developed models, - present some recent mathematical
**results**in this field.

See minisymposium webpage for a schedule and lecture abstracts.

# Matfyzpress: ANALÝZA METOD PRO MATICOVÉ VÝPOČTY

A new book in the Matfyzpress publishing house: ANALÝZA METOD PRO MATICOVÉ VÝPOČTY, 328 pages, ISBN 978-80-7378-201-6, march 2012.

Authors: Jurjen Duintjer Tebbens, Iveta Hnětynková, Martin Plešinger, Zdeněk Strakoš, Petr Tichý

# ERC-CZ project “Implicitly constituted material models: From theory through model reduction to efficient numerical methods”

Josef Málek has, as the pricipal investigator, recived a grant in the ERC-CZ programme. The project named "Implicitly constituted material models: From theory through model reduction to efficient numerical methods" is going to be funded from September 2012 to August 2017, and we assume that the project will substantially influence research activities of the MathMAC centre.

The other team members are Zdeněk Strakoš, Eduard Feireisl, Endre Süli (Oxford University), Miroslav Bulíček, Ondřej Souček, Jaroslav Hron and Vít Průša. It is expected that the team will be completed by several PhD. students and postdocs. (The vacancies will be filled by an external, open competition.)

Congratulations!