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85
Voted
JSYML
2007
15 years 17 days ago
2007
Abstract. An amalgamation base p in a simple theory is stably definable if its canonical base is interdefinable with the set of canonical parameters for the φ-definitions of p ...
72
Voted
AML
2004
15 years 17 days ago
2004
We examine the Dual Ramsey Theorem and two related combinatorial principles VW(k, l) and OVW(k, l) from the perspectives of reverse mathematics and effective mathematics. We give a...
108
Voted
COMBINATORICS
2004
15 years 16 days ago
2004
Bisztriczky introduced the multiplex as a generalization of the simplex. A polytope is multiplicial if all its faces are multiplexes. In this paper it is proved that the flag vect...
107
Voted
COMBINATORICS
2004
15 years 16 days ago
2004
Abstract. We use the theory of hyperplane arrangements to construct natural bases for the homology of partition lattices of types A, B and D. This extends and explains the "sp...
86
Voted
COMBINATORICS
2004
15 years 16 days ago
2004
Characteristic polynomials of random unitary matrices have been intensively studied in recent years: by number theorists in connection with Riemann zetafunction, and by theoretica...