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Seminari de Sistemes dinàmics UB-UPC: Singularities in planar piecewise smooth systems

John Hogan (University of Bristol): Singularities in planar piecewise smooth systems.

John Hogan (University of Bristol): Singularities in planar piecewise smooth systems.

Quan
09/03/2016 des de/d' 16:00"
On
Aula S01, FME, UPC
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John Hogan (University of Bristol): Singularities in planar piecewise smooth systems.

Més informació a http://www.maia.ub.es/ssd.shtml

Data d'inici

09/03/2016 16:00

Lloc

Aula S01, FME, UPC

Lectura tesi doctoral: Bin Li

Quan
08/03/2016 des de/d' 17:00"
On
Sala 002 Modul C1, Campus Nord
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s informem de la propera lectura de tesi doctoral:
Títol: The variational approach to brittle fracture in materials with anisotropic surface energy and in thin sheets
Doctorand: Bin Li

Directors: Marino Arroyo i Irene Arias 

Dia : 08-03-2016
 Hora : 17:00
Lloc : Sala 002 Modul C1, Campus Nord

http://doctorat.upc.edu/tesi/llistats-de-tesis/tesis-autoritzades-per-lectura

Seminari Teoria de Grups: Normal subgroups of groups of piecewise projective homeomorphisms of R

Quan
08/03/2016 des de/d' 15:00"
On
FME-UPC room 101
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Date: Tuesday March 8th, 2016, 15h
Place: FME-UPC room 101
Title: "Normal subgroups of groups of piecewise projective homeomorphisms of R"
Speaker: Pep Burillo (UPC)

Abstract: In this talk we will explore subgroups of the Lodha-Moore groups G and G_0\. The group G_0 presents many similarities with Thompson's group F, and we will prove that, as it happens with F, its commutator subgroup is simple. This fact has some consequences, namely, that every proper quotient is abelian, or that every finite-index subgroup is normal. In the case of G, is its second commutator subgroup the one which is simple. We will extend these results to the whole family of groups H(A) introduced by Monod in 2012\. This is joint work with Yash Lodha and Lawrence Reeves.

Lectura Tesis Doctoral Nina Asadipour

Nina Asadipour defensarà la Tesis Doctoral 'Rheological models for tissue relaxation and fluidisation' de la que és director Jose J. Muñoz Romero

Nina Asadipour defensarà la Tesis Doctoral 'Rheological models for tissue relaxation and fluidisation' de la que és director Jose J. Muñoz Romero

Quan
04/03/2016 des de/d' 17:00"
On
Sala d'Actes de l'EUTEIB, Campus Urgell
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el proper divendres 4 de març de 2016 a les 17h a la Sala d'Actes de l'EUTEIB, Campus Urgell.
(Programa de doctorat en Matemàtica Aplicada)

Seminari de Sistemes dinàmics UB-UPC: Aplicación asistida por ordenador del teorema KAM

Seminari de Sistemes dinàmics UB-UPC. Alejandro Luque: Aplicación asistida por ordenador del teorema KAM

Seminari de Sistemes dinàmics UB-UPC. Alejandro Luque: Aplicación asistida por ordenador del teorema KAM

Quan
02/03/2016 des de/d' 16:00"
On
Aula T2, Facultat de Matemàtiques, UB
Nom de contacte
marcel.guardia@upc.edu
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 Més informació a http://www.maia.ub.es/ssd.shtml

Presentació del llibre de Josep M. Brunat

Quan
02/03/2016 des de/d' 12:30"
On
sala d'actes de la Facultat Matemátiques
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Ens plau convidar-vos a la presentació del llibre del professor Josep Maria Brunat, Matemàtiques Clàssiques que tindrà lloc dimecres 2 de març a les 12h30 a la sala d'actes de la Facultat. 

El llibre, editat dins la Col·lecció FME, té format digital accessible en obert a l’UPCommons, i és una selecció de trenta temes diversos que formen part de la cultura matemàtica general, però que sovint no s’expliquen als estudis de grau.

Adjuntem l'enllaç del llibre: http://hdl.handle.net/2117/83181

Esperem que la publicació sigui del vostre interès i que ens acompanyeu en l'acte de presentació.

Salutacions cordials,

Jaume Franch
Degà de la Facultat de Matemàtiques i Estadística de la UPC 

Seminari Teoria de Grups: Automata Equations

"Automata Equations", Speaker: Albert Garreta (Stevens Institute)

"Automata Equations", Speaker: Albert Garreta (Stevens Institute)

Quan
01/03/2016 des de/d' 13:45"
On
FME-UPC room 101
Nom de contacte
enric.ventura@upc.edu
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Abstract

We will discuss the following problem: Suppose we have two directed graphs, G_1 and G_2, with labels in a set of constants A and a set of variables X. Each G_i has an initial vertex and a set of accepting vertices. We want to find a map f from X to A* so that G_1 and G_2 accept the same language once we substitute each x in X by f(x).

http://www.grupsbcn.cat/](http://www.grupsbcn.cat/

Computational geometry seminar: Computing the L1 Geodesic Diameter and Center of a Polygonal Domain

Quan
25/02/2016 de 13:00 a 14:00
On
Room S215 Omega Building, Campus Nord UPC
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Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor Speaker:**Matias Korman Tokuyama Laboratory, Tohoku University (Japan)
http://www.dais.is.tohoku.ac.jp/~mati/

Abstract: For a polygonal domain of h holes with a total of n vertices, we present algorithms that compute the L1 geodesic diameter in O(n^2+h^4) time and the L1 geodesic center in O((n^4+n2 h^4)α(n)) time, where α(·) denotes the inverse Ackermann function. No algorithms were known for these problems before. For the Euclidean counterpart, the best algorithms compute the geodesic diameter in O(n^7.73) or O(n^7(h + log n)) time, and compute the geodesic center in O(n^12+ε) time. Therefore, our algorithms are much faster than the algorithms for the Euclidean problems. Our algorithms are based on several interesting observations on L1 shortest paths in polygonal domains. 

Activities are regularly announced at
http://www-ma2.upc.edu/dccg/upc-seminar-on-computational-geometry/

Conferència Maria Alberich

"Matemàtiques a l'art, i art a les matemàtiques", conferència del dimecres 24 de febrer a les 18 h, a la seu del MMACA del Palau Mercader de Cornellà de Llobregat.
  • Conferència Maria Alberich
  • 2016-02-24T18:00:00+01:00
  • 2016-02-24T23:59:59+01:00
  • "Matemàtiques a l'art, i art a les matemàtiques", conferència del dimecres 24 de febrer a les 18 h, a la seu del MMACA del Palau Mercader de Cornellà de Llobregat.

"Matemàtiques a l'art, i art a les matemàtiques", conferència del dimecres 24 de febrer a les 18 h, a la seu del MMACA del Palau Mercader de Cornellà de Llobregat.

Quan
24/02/2016 des de/d' 18:00"
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"Matemàtiques a l'art, i art a les matemàtiques", conferència del dimecres 24 de febrer a les 18 h, a la seu del MMACA del Palau Mercader de Cornellà de Llobregat.

Més info:http://www.mmaca.cat/index.php

Lunch Seminar MESIO UPC-UB

Time: 14:00-15:00 (Pizza and drinks provided!) Room: Sala de Juntes de l’FME Speaker: Jan Graffelman Department of Statistics and Operations Research, UPC Title: The Statistics of Hardy-Weinberg Equilibrium
  • Lunch Seminar MESIO UPC-UB
  • 2016-02-24T14:00:00+01:00
  • 2016-02-24T15:00:00+01:00
  • Time: 14:00-15:00 (Pizza and drinks provided!) Room: Sala de Juntes de l’FME Speaker: Jan Graffelman Department of Statistics and Operations Research, UPC Title: The Statistics of Hardy-Weinberg Equilibrium

Time: 14:00-15:00 (Pizza and drinks provided!) Room: Sala de Juntes de l’FME Speaker: Jan Graffelman Department of Statistics and Operations Research, UPC Title: The Statistics of Hardy-Weinberg Equilibrium

Quan
24/02/2016 de 14:00 a 15:00
On
Sala de Juntes de l'FME
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Abstract

The Hardy-Weinberg law is a cornerstone principle of modern genetics. The law is more than a century old, and was independently stated in 1908 by the English mathematician Godfrey Hardy and the German physician Wilhelm Weinberg. The law states that, in the absence of disturbing factors (migration, differential survival and others) allele and genotype frequencies in a biological population will achieve equilibrium values within one generation and remain stable afterwards. The latter condition is known as Hardy-Weinberg equilibrium (HWE).

The principle is still relevant today, as testing markers for HWE is a standard step in almost all genetic studies. It is known that deviation from equilibrium is often associated with genotyping errors (misclassification of homozygotes as heterozygotes or the reverse), and equilibrium testing is an effective device to detect such errors. However, disequilibrium can also arise from other causes.

Moreover, Hardy-Weinberg equilibrium is typically assumed in many other statistical procedure that use genetic marker data, such as gene-disease association studies, relatedness investigations, and others. The HWE law has been a topic of intense research, and there are hundreds of research papers dedicated to it. Research related to the principle continues, as new types of genetic data arise. Pearson's chi-square test has been the most popular procedure to test genetic markers for equilibrium for decades, though nowadays computer-intensive exact procedures have become more and more popular.

In this talk I will explain some basic genetics, address the issue of statistically testing markers for Hardy-Weinberg equilibrium in large genomic databases, and comment upon recent work related to markers that reside on the X chromosome.