Dies ist die Homepage des Oberseminars "Mathematische Logik" im
Wintersemester 2013/2014.
Heike Mildenberger.
Martin Ziegler.
Zeit und Ort
Mi 16:30-18:00, SR 404 in der Eckerstr. 1, vorher
ab kurz nach 4 Tee in Zimmer 310
Vorträge
- 23.10.2013
Mohsen Khani:
Expansions of the ordered field of reals
Abstract: I will briefly describe the notion of "tameness" for the
expansions of the ordered field of real numbers. I will then
explain the notion of the "open core" of an structure and present two
results of van den Dries, one on expansions with discrete
subsets, and the other, on the expansions with dense subsets.
I will finally talk about parts of my
PhD thesis on the combination of these two: expansions with
a discrete and a dense subset.
- 30.10.2013
Martin Ziegler:
t.b.a.
- 13.11.2013
Otto Kegel:
Large groups
- 19.11.2013 (ausnahmsweise schon am Dienstag von 16:15 bis 17:45
in Hörsaal II Albertstraße 23b; vorher um
15:45 Tee in Zimmer 310, Eckerstr. 1)
Alexander Prestel:
Definable valuation rings
- 27.11.2013
Markus Junker:
Non omega-categorical structures with finitely many reducts
- 4.12.2013
um 16:00 (!), Tee um 15:30 (!)
Gabriel Salazar:
Realization of aleph_k-free modules with few endomorphisms
via Shelah's
Easy Black Box
- 11.12.2013
Juan Diego Caycedo:
The first-order theory of universal specialisations of Zariski structures
- 18.12.2013
Giorgio Laguzzi:
Silver versus club-Silver in the generalized Cantor space
- 8.1.2014
um 16:00 (!), Tee um 15:30 (!)
Philipp Schlicht:
The Hurewicz dichotomy for
generalized Baire spaces
Abstract: The Hurewicz dichotomy states that a Polish space is not K_sigma, i.e. not a union of
countably many compact sets, if and only if it contains a closed subspace homeomorphic to the
Baire space. We consider the analogous problem for closed subsets of the generalized Baire space
kappa^kappa. This is joint work with Philipp Lücke and Luca Motto Ros.
- 22.1.2014
Heike Mildenberger:
Finitely many near-coherence classes of ultrafilters
- 5.2.2013
um 16:00 (!), Tee um 15:30 (!)
Luca Motto Ros:
Bad Wadge-like reducibilities on the Baire space and on
arbitrary ultrametric Polish spaces
Abstract: We show that there are very natural Wadge-like
reducibilities on the Baire space whose induced
degree-structure behaves very badly (it contains infinite
antichains and/or infinite descending chains). Moreover,
we analyze the reducibilities induced by, respectively,
uniformly continuous, Lipschitz, and nonexpansive
functions on arbitrary ultrametric Polish spaces, and give sufficient and necessary (topological) conditions on such
spaces for the corresponding degree-structures being
well-behaved.
- 12.2.2014
Enrique Casanovas:
Bounded Hyperimaginaries
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