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Random dynamical systems: contraction and recurrence properties

ABSTRAC Consider a proper metric space X and a sequence (Fn) of i.i.d. random continuous mappings from X to X. It induces the stochastic dynamical system (SDS) Xn = Fn ∘ ∘ ∘ F1(x) starting at x ∈ X. W...

Nanoparticles under the Mathematical Microscope

Abstract: Several nanoparticles self-assemble from multiple copies of a limited number of building blocks, viruses being the archetypal example in biology. A majority of viruses have a highly ordered ...

The survival probability of a critical multi-type branching process in i.i.d. random environment

We consider Galton Watson branching processes of unique type and multi-type in fixed and in random environment. The main target is to observe the asymptotic behaviour of the survival probability of th...

Inequality and risk aversion in economies open to altruistic attitudes

In recent years there has been a great interest in the phenomenon of economic inequality, especially in relation to its connection with other important aspects of an advanced economy, for example atti...

Epidemic Risk and Insurance Coverage

This paper aims to apply simple actuarial methods to build an insurance plan protecting against an epidemic risk in a population. The studied model is an extended SIR epidemic in which the removal and...

Plant and animal stem cells: similar yet different

Abstract: The astonishingly long lives of plants and their regeneration capacity depend on the activity of plant stem cells. As in animals, stem cells reside in stem cell niches, which produce signals...

Giornata sulle biblioteca di Matematica

 Nel corso della giornata sono stati affrontati temi diversi: dalla Contrattazione centralizzata CRUI-CARE all’Open Access, dai servizi Nilde al costo degli abbonamenti. Nel pomeriggio una t...

La Matematica dei Liquidi Quantistici

In questo seminario discuteremo brevemente alcune transizioni di fase (condensazione di Bose-Einstein, superfluidità, supercontinuità, ecc.) che si possono verificare in sistemi quantistici a basse te...

Varietà sferiche: classificazione, applicazioni e generalizzazioni

Le varietà sferiche sono una generalizzazione delle varietà delle bandiere, delle varietà toriche e delle varietà simmetriche, e sono studiate intensivamente dagli anni '80 nell'ambito della teoria de...

A linear elastic model to detect magma chamber

In this seminar I will present a physical model used in volcanology to describe grounds deformations within calderas. Based on the linear elastic theory, this analytical model replaces caldera with a ...