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Workshop on Avanlanche processes in condensed matter physics and beyond

We would like to inform you that we are organizing a Worshop on Avanlanche processes in condensed matter physics and beyond, which will be held at the CRM (Barcelona), on January 9th to 13th, 2017.

We would like to inform you that we are organizing a Worshop on Avanlanche processes in condensed matter physics and beyond, which will be held at the CRM (Barcelona), on January 9th to 13th, 2017.

Quan
09/05/2016 a 13/05/2016 (Europe/Madrid / UTC200)
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The workshop is the continuation of a series of two previous meetings: “Crackling noise and intermittency in Condensed Matter Link” held in Göttingen (Germany) on May 2013 and “Avalanches in Functional Materials and Geophsyics” held in Cambridge on December 2014. 
Please note that October 2nd, 2016 is the early bird deadline registration (or when seats are filled). 
You can find more information and register at: Link
We hope that this information is of your interest and look forward to having you at the CRM.

Sincerely,

Álvaro Corral (Centre de Recerca Matemàtica) and Eduard Vives (Universitat de Barcelona). Organizing Comitee

Seminari de Geometria Algebraica: Niko Naumann

May's theorem and descent up to nilpotence

May's theorem and descent up to nilpotence

Quan
06/05/2016 des de/d' 15:00" (Europe/Madrid / UTC200)
On
Divendres 6 de maig de 2015, 15 h, Aula B, Facultat de Matemàtiques-Edifici Històric (UB), Gran Via de Les Corts Catalanes, 585, Barcelona 08007
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Descripció de l'activitat

http://www.ub.edu/sga/

Niko Naumann (Universität Regensburg)
May's theorem and descent up to nilpotence
http://www.ub.edu/sga/seminari1516/naumann.pdf

 

Jornada sobre oportunidades de colaboración con Japón

El seminari comptarà amb la participació de representants de JST Tòquio (Agència de Ciència i Tecnologia del Japó) i JSP Estrasburg (Societat Japonesa per a la Promoció de la Ciència). Data: divendres,6 maig Hora: 9:30 - 13 : 30h Lloc : Casa Àsia - Recinte Modernista Sant Pau, C / Sant Antoni Maria Claret , 165, Barcelona
  • Jornada sobre oportunidades de colaboración con Japón
  • 2016-05-06T09:30:00+02:00
  • 2016-05-06T13:30:00+02:00
  • El seminari comptarà amb la participació de representants de JST Tòquio (Agència de Ciència i Tecnologia del Japó) i JSP Estrasburg (Societat Japonesa per a la Promoció de la Ciència). Data: divendres,6 maig Hora: 9:30 - 13 : 30h Lloc : Casa Àsia - Recinte Modernista Sant Pau, C / Sant Antoni Maria Claret , 165, Barcelona

El seminari comptarà amb la participació de representants de JST Tòquio (Agència de Ciència i Tecnologia del Japó) i JSP Estrasburg (Societat Japonesa per a la Promoció de la Ciència). Data: divendres,6 maig Hora: 9:30 - 13 : 30h Lloc : Casa Àsia - Recinte Modernista Sant Pau, C / Sant Antoni Maria Claret , 165, Barcelona

Quan
06/05/2016 de 09:30 a 13:30 (Europe/Madrid / UTC200)
On
Casa Àsia - Recinte Modernista Sant Pau, C / Sant Antoni Maria Claret , 165, Barcelona
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Inscripció prèvia imprescindible mitjançant el formulari:  Formulari

Més informació a: Info

veure la notificació sencera: Notificació

Isabel Cristina Lopes : Time series forecasting

Seminar: Time series forecasting (Applications) Isabel Cristina Lopes Data: 4 de maig, 13:00-14:00 Lloc: Aula 18, Edifici Industrials (EUETIB)

Seminar: Time series forecasting (Applications) Isabel Cristina Lopes Data: 4 de maig, 13:00-14:00 Lloc: Aula 18, Edifici Industrials (EUETIB)

Quan
04/05/2016 de 13:00 a 14:00 (Europe/Madrid / UTC200)
On
Aula 18, Edifici Industrials (EUETIB)
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Seminari de Geometria Algebraica UPC-UB

Seminari de Geometria Algebraica UPC-UB - Álvaro del Pino Gómez (CSIC-ICMAT), Open problems in Engel geometry - Divendres 29 d'abril, 15 h, Aula B1, Facultat de Matemàtiques, Edifici Històric, Universitat de Barcelona
  • Seminari de Geometria Algebraica UPC-UB
  • 2016-04-29T15:00:00+02:00
  • 2016-04-29T23:59:59+02:00
  • Seminari de Geometria Algebraica UPC-UB - Álvaro del Pino Gómez (CSIC-ICMAT), Open problems in Engel geometry - Divendres 29 d'abril, 15 h, Aula B1, Facultat de Matemàtiques, Edifici Històric, Universitat de Barcelona

Seminari de Geometria Algebraica UPC-UB - Álvaro del Pino Gómez (CSIC-ICMAT), Open problems in Engel geometry - Divendres 29 d'abril, 15 h, Aula B1, Facultat de Matemàtiques, Edifici Històric, Universitat de Barcelona

Quan
29/04/2016 des de/d' 15:00" (Europe/Madrid / UTC200)
On
Aula B1, Facultat de Matemàtiques, Edifici Històric, Universitat de Barcelona
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Descripció de l'activitat

Seminari de Geometria Algebraica UPC-UB
http://www.ub.edu/sga/
Álvaro del Pino Gómez (CSIC-ICMAT)

Open problems in Engel geometry http://www.ub.edu/sga/seminari1516/delpino.pdf

Divendres 29 d'abril, 15 h, Aula B1, Facultat de Matemàtiques, Edifici Històric, Universitat de Barcelona

Computational geometry seminar 28-04-2016

Quan
28/04/2016 de 13:15 a 14:15 (Europe/Madrid / UTC200)
On
Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2)
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Title: Graphs, hypergraphs and dominating sets
Speaker: MERCÈ MORA

 

Thursday, April 28, 2016, 13:15-14:15 (15 minutes delayed with respect to the usual schedule)
Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2) 

Abstract: A 'simple hypergraph' is a collection of non-comparable subsets of a set of vertices. The elements of the hypergraph are called 'hyperedges'. A graph can be viewed as a hypergraph with hyperedges of size 2.


Many concepts of graphs give rise to a collection of subsets of vertices that allows us to consider hypergraphs associated with the graph by considering the collection of minimal or maximal elements. Namely, we will handle with the collection of closed neighborhoods, dominating sets, vertex covering sets and independent sets. We study the relationships between them by using some hypergraph operations.


Finally, we focus on the case of dominating sets. A hypergraph is a 'domination hypergraph' if it is the collection of the minimal dominating sets of some graph. We are interested in determining when a hypergraph is a domination hypergraph and, if it is not the case, we seek domination hypergraphs close to it, the domination completions. Moreover, we prove that the hypergraph is univocally characterized by some domination completions, the 'minimal domination completions'.

We discuss in more detail the case of k-uniform complete 'hypergraphs', that is, hypergraphs containing all the k-subsets of a set of vertices. 


Joint work with Jaume Martí-Farré and José Luis Ruiz.

Computational geometry seminar: Mercè Mora

COMPUTATIONAL GEOMETRY SEMINAR Thursday, April 28, 2016, 13:15-14:15 (15 minutes delayed with respect to the usual schedule) - Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2) Title: Graphs, hypergraphs and dominating sets Speaker: Mercè Mora Universitat Politècnica de Catalunya
  • Computational geometry seminar: Mercè Mora
  • 2016-04-28T13:15:00+02:00
  • 2016-04-28T14:15:00+02:00
  • COMPUTATIONAL GEOMETRY SEMINAR Thursday, April 28, 2016, 13:15-14:15 (15 minutes delayed with respect to the usual schedule) - Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2) Title: Graphs, hypergraphs and dominating sets Speaker: Mercè Mora Universitat Politècnica de Catalunya

COMPUTATIONAL GEOMETRY SEMINAR Thursday, April 28, 2016, 13:15-14:15 (15 minutes delayed with respect to the usual schedule) - Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2) Title: Graphs, hypergraphs and dominating sets Speaker: Mercè Mora Universitat Politècnica de Catalunya

Quan
28/04/2016 de 13:15 a 14:15 (Europe/Madrid / UTC200)
On
Room S215 Omega Building, Campus Nord UPC (equiv.: Room 215 Floor -2)
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Abstract: A simple hypergraph is a collection of non-comparable subsets of a set of vertices. The elements of the hypergraph are called hyperedges. A graph can be viewed as a hypergraph with hyperedges of size 2. 

Many concepts of graphs give rise to a collection of subsets of vertices that allows us to consider hypergraphs associated with the graph by considering the collection of minimal or maximal elements. Namely, we will handle with the collection of closed neighborhoods, dominating sets, vertex covering sets and independent sets. We study the relationships between them by using some hypergraph operations.
Finally, we focus on the case of dominating sets. A hypergraph is a domination hypergraph if it is the collection of the minimal domination sets of some graph. We are interested in determining when a hypergraph is a domination hypergraph and, if it is not the case, we seek domination hypergraphs close to it, the domination completions. Moreover, we prove that the hypergraph is univocally characterized by some domination completions, the minimal domination completions. We discuss in more detail the case of k-uniform complete hypergraphs/, that is, hypergraphs containing all the k-subsets of a set of vertices.

Joint work with Jaume Martí-Farré and José Luis Ruiz.

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

Junior GESTA: Symplectic geometry and dynamical systems

Conference on symplectic geometry and dynamical systems with talks given by graduate and post-graduate students

Conference on symplectic geometry and dynamical systems with talks given by graduate and post-graduate students

Quan
27/04/2016 10:30 a 28/04/2016 12:00 (Europe/Madrid / UTC200)
On
EPSEB, Sala de Graus
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This two-day conference will feature talks by graduate and post-graduate students from different universities. The common theme is symplectic geometry and dynamical systems. More details can be found on our website http://juniorgesta.wordpress.com/

Attention: change of room. The conference will take place in Sala de Graus (EPSEB).

 List of speakers

* Roisin Braddell (Université de Bordeaux)
* Damien Bouloc (Université Toulouse Paul Sabatier)
* Álvaro del Pino Gomez (ICMAT Madrid)
* Anna Kiesenhofer (UPC Barcelona)
* Cédric Oms (Université Libre de Bruxelles)
* Jose Luis Perez Garcia (ICMAT Madrid)
* Samuel Ranz (ICMAT Madrid)
* Abdó Roig (UPC Barcelona)
* Carles Sáez (Universitat de Barcelona)
* Rodrigo Schaefer (UPC Barcelona)

Junior GESTA

Conference on symplectic geometry and dynamical systems with talks given by graduate and post-graduate students

Conference on symplectic geometry and dynamical systems with talks given by graduate and post-graduate students

Quan
27/04/2016 a 28/04/2016 (Europe/Madrid / UTC200)
On
EPSEB, room 0.4
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This two-day conference will feature talks by graduate and post-graduate students from different universities. The common theme is symplectic geometry and dynamical systems. More details can be found on our website http://juniorgesta.wordpress.com/.

List of speakers

  • Roisin Braddell (Université de Bordeaux)
  • Álvaro del Pino Gomez (ICMAT Madrid)
  • Anna Kiesenhofer (UPC Barcelona)
  • Cédric Oms (Université Libre de Bruxelles)
  • Jose Luis Perez Garcia (ICMAT Madrid)
  • Samuel Ranz (ICMAT Madrid)
  • Abdó Roig (UPC Barcelona)
  • Carles Sáez (Universitat de Barcelona)
  • Rodrigo Schaefer (UPC Barcelona)

MAK Crypto Seminar

Information Inequalities, secret sharing and applications

Information Inequalities, secret sharing and applications

Quan
22/04/2016 des de/d' 11:30" (Europe/Madrid / UTC200)
On
Campus Nord UPC, Building C3, Room 204a (2nd floor)
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Given some random variables X_1, ... , X_n, one can form a vector of size 2^n-1 with the entropies of subsets of variables: [H(X_1), H(X_2), H(X_1,X_2), ... , H(X_1,...,X_n)]. The set of all possible such vectors is an object in the Euclidean space delimited by hyperplanes: information inequalities. Perhaps the most famous inequality is Shannon's basic inequality H(A,C) + H(B,C) = H(A) + H(A,B,C). We will see which role do these inequalities play in problems like secret sharing. I will also discuss a recent result on the geometry of inequalities based on duality of polymatroid.