A map is a graph which is drawn on a compact orientable surface. There exist various results relating the generating series of maps to the theory of symmetric functions. In this talk, I present two different approaches which allow to relate the…
Eventi
Rational approximations to linear subspaces – Nicolas de Saxcé (CNRS, Université Paris-Nord 13)
Dirichlet’s theorem in Diophantine approximation implies that for any real x, there exists a rational p/q arbitrarily close to x such that |x-p/q|<1/q^2. In addition, the exponent 2 that appears in this inequality is optimal, as seen for example by…
Divisible convex sets with properly embedded cones – Gabriele Viaggi (University of Heidelberg)
An open subset of real projective space is said to be properly convex if it is contained in an affine…
Progress on canonical trace ideals – Dumitru Stamate (University of Bucharest)
The trace of a module $M$ is the sum of the images of all $R$-module homomorphisms from $R$ into $M$.…
Diffuse approximation of the Willmore functional and a conjecture of De Giorgi – Mattia Freguglia (Scuola Normale Superiore di Pisa)
In the last thirty years, there has been a growing interest in geometric energies, as for example the Perimeter functional…
Algebraic concordance and strongly invertible knots – Alessio Di Prisa (SNS Pisa)
In 1969 Levine defined a surjective homomorphism from the knot concordance group to the so called algebraic concordance group, which…
Mixing time estimates for Quantum Markov Semigroups of spin systems – Angelo Lucia (Universidad Complutense de Madrid, Spain)
Quantum Markov Semigroups constitute a mathematically tractable yet physically relevant class of evolutions for open quantum systems. Under the assumption…
Effect of Transport Noise on Kelvin–Helmholtz Instability – Silvia Morlacchi (Scuola Normale Superiore)
We numerically investigate the effect of transport noise on the Kelvin- Helmholtz instability at the interface of two 2D fluids…
Some new ordering results for parallel and series systems with dependent heterogeneous exponentiated Weibull components – Milto Hadjikyriakou (UCLan Cyprus)
In this work, ordering results are presented for parallel and series systems arising from dependent heterogeneous exponentiated Weibull components that…
The Markoff spectrum on the Hecke group – Dong Han Kim (Dongguk University)
We consider the Markoff spectrum on the Hecke group. The Markoff spectrum on H4 is known as the Markoff spectrum of index 2 sublattices by Vulakh and the Markoff spectrum of 2-minimal forms or C-minimal forms by Schmidt, who characterized the…