REGISTRATION FEE

145€*

* SOMMA centres have available grants to cover registration costs for their PhD students and postdocs, check with your centre if it applies to you.

** Registration includes lunch and dinner on Thursday, and the Wine & Cheese.

Math SOMMa Junior Meeting

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Workshop
From October 02, 2024
to October 04, 2024
  • Deadline to apply for talk/poster: June 2nd, 2024
  • Acceptance of talk/poster participation will be announced by the end of June 2024
  • Deadline for participation: September 18th, 2024
  • If you are part of a SOMMA centre, check with your institution regarding coverage for your registration.
  • Registration includes lunch and dinner on Thursday, and the wine & cheese
Registration deadline 18 / 09 / 2024
Introduction
Welcome to the Math SOMMa Junior Meeting 2024. This event is dedicated to early-career researchers, including predoctoral and postdoctoral researchers, and aims to enhance collaboration among the prestigious Severo Ochoa and Maria de Maeztu research institutions in mathematics; the Basque Centre for Applied Mathematics (BCAM), Instituto de Ciencias Matemáticas (ICMAT), Instituto de Matemáticas de la Universidad de Granada (IMAG), Centre Internacional de Mètodes Numèrics a l’Enginyeria (CIMNE), and the Centre de Recerca Matemàtica (CRM).

Our diverse program is designed to stimulate intellectual exchange and networking. It features a mix of plenary sessions, contributed talks, and a dynamic poster session. Alongside these, we have planned a series of complementary activities to foster networking and collaboration.

We warmly invite you to be an active participant, whether by presenting your latest research, joining in enriching discussions, or simply immersing yourself in this engaging community.

Join us in Barcelona for an unforgettable experience of learning, collaboration, and growth!

Organising Committee
SCIENTIFIC Committee
Patricio Almirón | IMAG
Paloma Bengoechea | UB-CRM (Chairwoman)
Daniel Eceizabarrena | University of Massachusetts
Mario García Fernández | UAM-ICMAT
Matteo Giacomini | CIMNE
Hristo Inouzhe | BCAM
Tamar Mesablishvili | IMAG
Guillem Perarnau | UPC-CRM
Pedro Tradacete | ICMAT
SPEAKERS

The Algebraic PGD Toolbox to optimize the design of a vehicle: progress and challenges

Abstract

The automotive design process is complex and time-consuming, requiring collaboration between engineers from different areas of expertise to predict and optimize every aspect of the product. Meeting numerous targets and regulations while keeping up with the fast-paced global market adds further challenges. To remain competitive, automotive companies must improve development efficiency by reducing time-to-market and production costs without compromising quality. Simulation-based studies are crucial in the early design phase, but the extensive computational requirements of detailed vehicle models make them impractical for exploring the entire design space. Therefore, the industry persists in employing trial-and-error approaches, limiting design exploration to a few thousand variants out of billions of possibilities, thus potentially missing better solutions. A possible solution is represented by ROM technique that can be employed to allow multidimensional design exploration.

This work introduces an innovative methodology to assess the noise and vibration (NVH) performance of car-body structures. NVH simulation engineering plays a critical role in ensuring that the product meets noise and vibration criteria, thereby improving comfort, quality, and customer satisfaction. This target is highly influenced by the global static and dynamic stiffness of the vehicle body structure, making it extremely sensitive to changes in design parameters. To address this challenge, the proposed approach extends the well-known Proper Generalized Decomposition (PGD) technique to solve parametrically the dynamic and static analysis of a structure characterized by material and/or geometric design variables. The main idea is to construct a parametric FE model of the structure and then employ a PGD-based parametric solver. By utilizing the proposed method, engineers can develop predictive models capable of rapidly evaluating multiple design configurations, facilitating the identification of optimal choices that meet NVH requirements. The proposed method was developed in the context of the doctoral thesis “Static and dynamic global stiffness analysis for automotive pre-design” (more info at: https://www.lacan.upc.edu/ProTechTion/ ). The thesis was supervised by the Universitat Politècnica de Catalunya (UPC) and Swansea University (SU), in collaboration with the automotive company SEAT S.A. as industrial partner. The project is currently in a “Proof of Concept” stage at SEAT, such that it can be included in the current SEAT workflow.

 

SHORT BIO
Dr. Fabiola Cavaliere is currently responsible of the “AI structural simulation” activities at the SEAT R&D Center in Barcelona. In April 2022 she successfully obtained her doctorate in Mathematical and Computational Modeling from Polytechnic University of Catalonia (UPC) in Spain and Swansea University (SU) in UK. During her research activity in close collaboration with SEAT, she developed a novel methodology based on a machine learning approach to optimize the development process of a car structure. The method allows to maximize the driving comfort and vibroacoustic performance of the vehicle already from the preliminary phase of a project.

Reverse isoperimetric problems under curvature constraints and their stability

Abstract
What is the smallest volume a convex body K in R^n can have for a given surface area? This question is in the reverse direction of the classical isoperimetric problem and, as such, has an obvious answer: the infimum of possible volumes is zero. One way to make this question highly non-trivial is to assume that K is uniformly convex in the following sense. We say that K is λ-convex if the principal curvatures at every point of its boundary are bounded below by a given constant λ>0 (considered in the barrier sense if the boundary is not smooth). By compactness, any smooth strictly convex body in R^n is λ-convex for some λ>0. Another example of a λ-convex body is a finite intersection of balls of radius 1/λ (sometimes referred to as ball-polyhedra).
Until recently, the reverse isoperimetric problem for λ-convex bodies was solved only in dimension 2. In a recent joint work with Kateryna Tatarko, we resolved the problem in R^3 as well. We showed that the lens, i.e., the intersection of two balls of radius 1/λ, has the smallest volume among all λ-convex bodies of a given surface area. For n>3, the question remains largely open.
I will provide an overview of the results concerning the reversal of classical inequalities under curvature constraints in various ambient spaces. Time permitting, I will also discuss ongoing work on stability in the reverse isoperimetric and Cheeger inequalities.
SHORT BIO

I am an assistant professor (professor lector) at Universitat de Barcelona and a member of the Centre de Recerca Matemàtica (CRM-Barcelona).
I am a member of a research group in holomorphic dynamics at UB called HoloDyn.
I do research in geometry and dynamics. Some keywords are: holomorphic dynamics, hyperbolic dynamics and geodesic flows, rigidity of dynamical systems, renormalization theory, Riemannian and convex geometry, isoperimetric inequalities.

Schur-type multipliers on Schatten-von Neumann classes as singular integral operators

Abstract
A Schur multiplier is a linear operator that associated to a matrix M that acts on other matrices by entry wise multiplication. The boundedness of Schur multipliers in the Schatten-von Neumann classes is an interesting question in operator algebra that was already considered by Grothendieck. In this talk, we will explain how smoothness of the matrix M (seen as a function of two variables) is key to finding sufficient conditions for the boundedness of the corresponding Schur multiplier and other operators of the same flavor. This will come from a surprising connection with Fourier multipliers and noncommutative Calderón-Zygmund theory. Based on joint work with Adrián M. González Pérez, Javier Parcet and Eduardo Tablate.

 

SHORT BIO
José M. Conde Alonso is a Ramón y Cajal fellow at Universidad Autónoma de Madrid. He previously worked at Brown University, Universitat Autònoma de Barcelona and ICMAT. He works in the interface of harmonic analysis and operator algebra, especially in problems involving operator valued functions and noncommutative Lp spaces.

Web: https://sites.google.com/view/josecondealonso 

On the topology of compact locally homogeneous plane waves

Abstract
A compact flat Lorentzian manifold is the quotient of the Minkowski space by a discrete subgroup $\Gamma$ of the isometry group, acting properly, freely and cocompactly on it. A classical result by Goldman, Fried and Kamishima states that, up to finite index, $\Gamma$ is a uniform lattice in some connected Lie subgroup of the isometry group, acting properly and cocompactly, generalizing Bieberbach theorem to the Lorentzian signature. Such compact quotients are called “standard”. More generally, a compact quotient of a homogeneous space $G/H$ of a Lie group $G$ is standard if the fundamental group action  extends to a proper cocompact action of a connected Lie subgroup of $G$. It turns out that looking for standard quotients is an easier problem when studying the existence of compact quotients of homogeneous spaces. This talk is about compact locally homogeneous plane waves. Plane waves can be thought of as a deformation of Minkowski spacetime, they are of great mathematical and physical interests. In this talk, we describe the isometry group of a 1-connected homogeneous non-flat plane wave, and show that compact quotients are “essentially” standard. As an application, we obtain that the parallel flow of a compact plane wave is equicontinuous. This is a joint work with M. Hanounah, I. Kath and A. Zeghib.

 

SHORT BIO
Lilia Mehidi is a Postdoc at University of Granada and member of the IMAG. She works in  Lorentzian Geometry. More precisely, she is interested in questions around Lorentzian dynamics: geodesic dynamics in Lorentzian signature, isometric group actions, theory of quotients (or Clifford–Klein forms) of homogeneous spaces.  She defended her PhD in 2019 at the University of Bordeaux (France) under the supervision of prof. Christophe Bavard and then she spent three years as a Postdoc at the ENS de Lyon (France).

Web:  https://mehidi.pages.math.cnrs.fr/siteweb/ 

AI: The mathematics of self-deception

Abstract

The impact of “Artificial Intelligence” in science and technology in recent years has been enormous, giving rise to a bubble of overhyped claims and promises that heavily influence the research landscape in fields as diverse as chemistry, medicine or energy, to name just a few. However, it is increasingly evident that there is a dissonance between what AI does and what AI gurus tell us it can do.

In this talk, we will show why AI, and more specifically Machine Learning, is a perfect tool for self-deception, even if we are extremely careful with our experimental methodology. We will discuss the main issues that can lead to overestimated performance results, and illustrate how they appear subtly in more real and “top-level” scientific studies than one would expect.

 

SHORT BIO
Teijeiro received his PhD in Artificial Intelligence and Computer Science from the Centro Singular de Investigación en Tecnoloxías Intelixentes (CITIUS), University of Santiago de Compostela, in 2017. In the 2018-2022 period he worked as a postdoctoral researcher with the Embedded Systems Laboratory (ESL) at the EPFL, Switzerland, where he focused on energy efficient machine learning methods for wearable devices. Since January 2023 he is with BCAM – Basque Center for Applied Mathematics as a Ramón y Cajal Research Fellow. His research interests include knowledge representation, non-monotonic temporal reasoning, efficient machine learning, event-based sensing, and their application to biomedical signal processing. He is also a co-founder of the Sensemodi start-up, aimed at developing intelligent wearable devices for monitoring musculoskeletal disorders.

 

Web: https://orcid.org/0000-0002-2175-7382 

tentative schedule

Wednesday

02/10/24

Thursday

03/10/24

Friday

04/10/24

9:30





-

Reverse isoperimetric problems under curvature constraints and their stability

-

Kostiantyn Drach

UB - CRM


-

Schur-type multipliers on Schatten-von Neumann classes as singular integral operators

-

José Manuel Conde

UAM-ICMAT

10:00

10:30


Contributed talk

On rigidity and symmetry: what finite group actions tell us about aspherical manifolds

Jordi Daura Serrano

UB

Contributed talk

Local behaviour of high energy eigenfunctions of polygonal domains

Alba Dolores García Ruiz

ICMAT

Contributed talk

Brill–Noether Theory of Stable Vector Bundles on Ruled Surfaces

Irene Macías Tarrío

UB

Contributed talk

How to obtain nice PDE properties under poor geometries, via harmonic analysis

Pablo Hidalgo Palencia

ICMAT

11:00

GROUP PHOTO

Coffee Break

Coffee Break

11:30

Contributed talk

Overdetermined problems in the sphere and minimal surfaces in the Euclidean ball

Diego Alfonso Marín Muñoz

IMAG

Contributed talk

Topological derivative in constrained optimization problems via the null-space algorithm

Jose Antonio Torres

CIMNE

Contributed talk

CMC-1 surfaces in hyperbolic and de Sitter spaces with Cantor ends

Jorge Hidalgo Calderón

IMAG

Contributed talk

Within-Host Models Unravelling the Dynamics of Dengue Reinfections

Vizda Anam

BCAM

12:00

Contributed talk

Localised Multilinear Restriction Inequalities

Jennifer Duncan

ICMAT

Contributed talk

Bifurcation analysis of a two-infection transmission model with explicit vector dynamics

Akhil Kumar

BCAM

Contributed talk

On the semi-additivity of the 1/2-symmetric caloric capacity

Joan Hernández García

UAB

Contributed talk

Phase-field damage models via homogenization

Gerard Villalta

CIMNE

12:30

Contributed talk

The Mittag-Leffler theorem for proper minimal surfaces and directed meromorphic curves

Tjaša Vrhovnik

IMAG

Contributed talk

Iterative solvers and reduced-order modelling for the simulation of lattice structures

Raul Rubio

CIMNE

On the topology of compact locally homogeneous plane waves

-

Lilia Mehidi

IMAG

13:00-13:10

CLOSING

13:00

Lunch

13:30

14:00

14:30

REGISTRATION

14:30-15:00

15:00

WELCOME

15:00-15:30

AI: The mathematics of self-deception

-

Tomás Teijeiro Campo

BCAM

15:30

The Algebraic PGD Toolbox to optimize the design of a vehicle: progress and challenges

-

Fabiola Cavaliere

SEAT-CIMNE

16:00

Contributed talk

Decomposition of complete 3-manifolds of positive scalar curvature with subquadratic decay

Teo Gil Moreno de Mora Sardà

UAB

Contributed talk

Periodic motions in Electrodynamics: the Infinite Wire model

Manuel Garzón

ICMAT

16:30

Coffee Break

Coffee Break

17:00

Contributed talk

Abelian varieties that split modulo all but finitely many primes

Enric Florit Zacarías

UB

Contributed talk

Pointwise convergence of the Klein-Gordon flow

Pablo Merino San José

BCAM

Speed Networking

In this section, participants will be randomly paired and each will describe their research topic for two minutes. After this, partners will be switched randomly and the process will be repeated. Participants are required to record the names of the partners they meet. At the end of the session, a graph illustrating the interactions between research subareas and research centers will be created. The activity is planned to take place outdoors, weather permitting.

17:30

Contributed talk

Character varieties in knot theory

Alejandro Calleja

ICMAT

Contributed talk

Asymptotic estimates for the Dirichlet heat equation in exterior domains

Alejandro Garriz

IMAG

18:00

Wine & Cheese

18:30

19:00

19:30

20:00

Dinner

Poster Session

POSTERS & CONTRIBUTED TALKS
Participants have the option to contribute with a talk or a poster presentation if they wish to do so. The poster boards that are available at the CRM measure one meter wide by two meters high. Any poster size within these limits is fine.
To apply, provide the relevant information when applying to participate.
    • Deadline to apply: May 12th, 2024
    • Decisions will be announced by the first two weeks of June, 2024
LIST OF PARTICIPANTS
Name Institution
Jose Antonio Torres CIMNE
Raul Rubio Centre internacional de mètodes numèrics a l\'enginyeria (CIMNE))
Teo Gil Moreno de Mora Sardà Université Paris-Est Créteil
Gerard Villalta i Quintana CIMNE
Alex Ferrer CIMNE
Tomás Sanz Perela Universitat de Barcelona
Jordi Garriga Puig Universitat de Barcelona
Lluís Llàcer Sansaloni Universitat de Barcelona
Kostiantyn Drach Universitat de Barcelona
Irene Macías Tarrío Universitat de Barcelona
Enric Florit Zacarías Universitat de Barcelona
Jordi Daura Serrano Universitat de Barcelona
Anna Jové Campabadal Universitat de Barcelona
Joan Hernández García Universitat Autònoma de Barcelona
Giorgio Zamberlan Universitat Politècnica de Catalunya
Luis Tao Universitat Politècnica de Catalunya
Enrico Savona Universitat Politècnica de Catalunya
Pau Gabarrell Universitat Politècnica de Catalunya
Guillem Perarnau Llobet Universitat Politècnica de Catalunya
Matteo Giacomini Universitat Politècnica de Catalunya
María de Leyva Elola-Olaso Universitat Politècnica de Catalunya
Inmaculada Benítez Berral Universidad de Granada
Helena Del Río Fernández Universidad de Granada
Jorge Hidalgo Calderón Universidad de Granada
Tjasa Vrhovnik Universidad de Granada
Diego Alfonso Marín Muñoz Universidad de Granada
Alejandro Garriz Universidad de Granada
Juan Antonio Villegas Universidad de Granada
Niccolo Tassi Universidad de Granada
Jose Manuel Conde Alonso Universidad Autónoma de Madrid
Roser Homs Pons Centre de Recerca Matemàtica
Javier Guillán Rial Centre de Recerca Matemàtica
Joaquim Duran i Lamiel Centre de Recerca Matemàtica
Alba Dolores García Ruiz ICMAT
Manuel Garzón Martínez ICMAT
Jennifer Duncan ICMAT
Alejandro Calleja ICMAT
Pablo Hidalgo Palencia ICMAT
Javier Peñafiel Tomás ICMAT
María Ángeles García-Ferrero ICMAT
Fan Zheng ICMAT
Vizda Anam Basque Center for Applied Mathematics
Tomas Teijeiro Basque Center for Applied Mathematics
Carlo Delfin Estadilla Basque Center for Applied Mathematics
Akhil Srivastav Basque Center for Applied Mathematics
Bruno Valdemar Guerrero Borges Basque Center for Applied Mathematics
Pablo Merino San José Basque Center for Applied Mathematics
Javier de la Bodega Basque Center for Applied Mathematics

ACKNOWLEDGEMENTS

CENTRO TIPO DE AYUDA CONVOCATORIA TEXTO TEXTO Y LOGOTIPOS
Centros de Excelencia«Severo Ochoa» y Unidades de Excelencia «María de Maeztu» 2023-2026 Ayuda CEX2021-001142-S  financiada por MICIU/AEI/10.13039/501100011033

Ayuda CEX2021-001142-S  financiada por:

Centros de Excelencia«Severo Ochoa» y Unidades de Excelencia «María de Maeztu» 2011-2028 Ayuda CEX2023-001347-S  financiada por MICIU/AEI/10.13039/501100011033

Ayuda CEX2023-001347-S  financiada por:

Centros de Excelencia«Severo Ochoa» y Unidades de Excelencia «María de Maeztu» 2021-2024 Ayuda CEX2020-001105-M  financiada por MICIU/AEI/10.13039/501100011033

Ayuda CEX2020-001105-M  financiada por:

Centros de Excelencia«Severo Ochoa» y Unidades de Excelencia «María de Maeztu» 2022-2025 Ayuda CEX2020-001084-M  financiada por MICIU/AEI/10.13039/501100011033

Ayuda CEX2020-001084-M   financiada por:

INVOICE/PAYMENT INFORMATION
IF YOUR INSTITUTION COVERS YOUR REGISTRATION FEE: Please note that, in case your institution is paying for the registration via bank transfer, you will have to indicate your institution details and choose “Transfer” as the payment method at the end of the process.
UPF | UB | UPC | UAB
*If the paying institution is the UPF / UB/ UPC / UAB, after registering, please send an email to comptabilitat@crm.cat with your name and the institution internal reference number that we will need to issue the electronic invoice. Please, send us the Project code covering the registration if needed.
Paying by credit card
IF YOU PAY VIA CREDIT CARD but you need to provide the invoice to your institution to be reimbursed, please note that we will also need you to send an email to comptabilitat@crm.cat providing the internal reference number given by your institution and the code of the Project covering the registration (if necessary).
LODGING INFORMATION

ON-CAMPUS AND BELLATERRA

BARCELONA AND OFF-CAMPUS 

The organisation has blocked some rooms for SOMMA participants. If you wish to make a direct booking, you must contact before July 15 directly to: reservas@hotelexecampus.com and indicate that you will be a participant of the “SOMMA JUNIOR MEETING”, they will tell you the steps to follow to complete the booking and will confirm rates.

 

For inquiries about this event please contact the Scientific Events Coordinator Ms. Núria Hernández at nhernandez@crm.cat​​