Stefan Geschke's Papers
Theses:
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Homogene kompakte Räume,
Master's thesis, FU Berlin (1995)
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On sigma-filtered Boolean algebras,
Ph.D. thesis, FU Berlin (1999)
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Convex geometry, continuous Ramsey theory, and ideals
generated by graphs of functions,
a survey of the articles reviewed for my Habilitation, FU Berlin
(2004)
Refereed articles (original research):
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On the weak Freese-Nation property of P(omega),
coauthors: Sakae Fuchino and Lajos Soukup, Archive for
Mathematical Logic 40 (2001), no. 6, 425-435
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On the weak Freese-Nation property of complete Boolean algebras,
coauthors: Sakae Fuchino, Saharon Shelah, and Lajos
Soukup,
Annals of Pure and Applied Logic 110 (2001), no. 1-3, 80-105
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On tightly kappa-filtered Boolean algebras,
Algebra Universalis 47 (2002), 69-93
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Convex decompositions in the plane and
continuous pair colorings of the irrationals,
coauthors: Menachem Kojman, Wieslaw Kubis, and Rene
Schipperus,
Israel J. Math. 131, 285-317 (2002)
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Convexity numbers of closed subsets in R^n,
coauthor: Menachem Kojman,
Proc. Am. Math. Soc. 130, No. 10, 2871-2881 (2002)
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Covering R^{n+1} by graphs of n-ary functions and long linear
orderings of Turing degrees,
coauthor: Uri Abraham,
Proc. Am. Math. Soc. 132, No. 11, 3367-3377 (2004)
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Some notes concerning the homogeneity of Boolean algebras and
Boolean spaces,
coauthor: Saharon Shelah,
Topology and its Applications 133, 241-253 (2003)
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Some combinatorial principles defined in terms of elementary
submodels (formerly "Remarks on a paper of Juhasz and
Kunen"),
coauthor: Sakae Fuchino,
Fund. Math. 181, 233-255 (2004)
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More convexity numbers of closed sets in R^n,
Proc. Am. Math. Soc. 133, 1307-1315 (2005)
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A note on minimal dynamical systems,
Acta Univ. Carol., Math. Phys. 45, No.2, 35-43 (2004)
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Continuous Ramsey theory on Polish spaces and covering
the plane by functions,
coauthors: Martin Goldstern, Menachem Kojman,
Journal of Mathematical Logic, Vol. 4, No. 2 (2004) 109-145
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A dual open coloring axiom,
Annals of Pure and Applied Logic 140 (2006) 40-51
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The coinitiality of a compact space,
Topology Proceedings 30 No. 1 (2006), pp. 237-250
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Injective and projective T-Boolean algebras,
coauthors: Richard N. Ball and James N. Hagler,
Journal of Pure and Applied Algebra,
Volume 209, Issue 1 , April 2007, Pages 1-36
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An upper bound for the cellularity of the phase space of a
minimal dynamical system, to appear in Topology Proceedings
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Metric Baumgartner theorems and universality,
coauthor: Menachem Kojman,
Math. Res. Lett. 14 (2007), no. 2, 215-226
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Potentially continuous colorings, to appear in Archive for
Mathematical Logic
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The number of openly generated Boolean algebras,
coauthor: Saharon Shelah,
Journal of Symbolic Logic 73 (2008), 151-164
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Functions for which all points are a local minimum or
maximum,
coauthors: Ehrhard Behrends, Tomasz Natkaniec,
Real Analysis Exchange, Vol. 33(2), 2007/2008, pp. 1-4
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Low distortion embeddings of infinite metric spaces,
to appear in Annals of Pure and Applied Logic
Refereed survey papers:
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Applications of elementary submodels in general topology,
in Foundations of the Formal Sciences I, Humboldt
Universität zu Berlin, May 7-9,
1999, eds. Benedikt Löwe and Florian Rudolph,
Synthese Volume 133 Nos. 1-2, October/November 2002, 31-41
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On Sacks Forcing and the Sacks Property,
coauthor: Sandra Quickert,
Foundations of the Formal Sciences
III (B. Löwe, B. Piwinger, T. Räsch eds.),
Complexity in Mathematics and Computer Science,
Papers of a Conference in Vienna, September 21-24, 2001, Kluwer
Academic Publishers, Dordrecht 2004 [Trends in Logic]
Preprints and recent submissions:
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Almost disjoint families on large underlying sets,
coauthors: Sakae Fuchino, Lajos Soukup,
RIMS Kokyuroku, No.1530 (February 2007), 5-16
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How to drive our families mad,
coauthors: Sakae Fuchino, Lajos Soukup,
submitted
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Symmetrized induced Ramsey theorems,
coauthor: Menachem Kojman,
submitted
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Functions with many local extrema,
preprint
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Negative induced Ramsey theorems,
preprint
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The shift on P(omega)/fin,
preprint
Notes and Papers that are not meant to be published in a journal:
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Analytic determinacy and sharps,
Preprint Nr. A-05-2002, FB Mathematik und Informatik, Serie A:
Mathematik.
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Incomplete metric spaces and Banach's fixed point
theorem,
preprint. This article has been superceded by [M. Elekes,
On a converse to Banach's Fixed Point Theorem, submitted].