Agenda dicembre 2016
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Visione, strategie, processi e sistema informativo: differenze tra una PMI e una multinazionale
Particolari di fissaggio: dall’idea alla fabbricazione passando per il disegno
On the complexity of embeddability between groups
Filippo Calderoni
Università di Torino
ABSTRACT: After a gentle introduction to the theory of Borel reducibility, we present some recent results about the complexity of quasi-orders between groups: we exploit the main techniques developed by Camerlo-Marcone-Motto Ros to show that the embeddability between countable groups and the topological embeddability between Polish groups are invariantly universal quasi-orders. In so doing, we strengthen a result obtained by Williams and a result by Ferenczi-Louveau-Rosendal.
Further, if time permits, we discuss a work in progress on the complexity of the embeddability between groups of uncountable size.
Quando
02/12/2016 dalle 14:30 alle 15:30
Organizzato da
Dipartimento di Scienze matematiche, informatiche e fisiche
Dove
Sala Riunioni DIMA, Dipartimento di Scienze Matematiche, Informatiche e Fisiche – Via delle Scienze 206, Udine