Séminaires : Séminaire de Logique Lyon-Paris

Equipe(s) : lm,
Responsables :O. Finkel, A. Khélif, S. Rideau, T. Tsankov, A. Vignati
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Salle : Zoom ID: 824 8220 9628; s'inscrire à la liste ou contacter silvain.rideau@imj-prg.fr pour le mot de passe.
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Orateur(s) Slawomir Solecki - University of Illinois at Urbana-Champaign, USA,
Titre Menger compacta as projective Fraisse limits with emphasis on dimension one
Date29/05/2017
Horaire15:10 à 16:10
Diffusion
RésumeIn each dimension d, there exists a canonical compact, second countable space, called the d-dimensional Menger space, with certain universality and homogeneity properties. For d = 0, it is the Cantor set, for d = infinity, it is the Hilbert cube. I will concentrate on the 1-dimensional Menger space. I will prove that it is a quotient of a projective Fraisse limit. I will describe how a property of projective Fraisse limits coming from Logic, called the projective extension property, can be used to prove high homogeneity of the 1-dimensional Menger space.

This is joint work with Aristotelis Panagiotopoulos.
SalleZoom ID: 824 8220 9628; s'inscrire à la liste ou contacter silvain.rideau@imj-prg.fr pour le mot de passe.
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