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JCT
2007
122views more  JCT 2007»
15 years 6 months ago
h-Vectors of Gorenstein polytopes
We show that the Ehrhart h-vector of an integer Gorenstein polytope with a unimodular triangulation satisfies McMullen’s g-theorem; in particular it is unimodal. This result gen...
Winfried Bruns, Tim Römer
MOC
2000
71views more  MOC 2000»
15 years 6 months ago
Zeroes of Dirichlet L-functions and irregularities in the distribution of primes
Seven widely spaced regions of integers with 4,3(x) < 4,1(x) have been discovered using conventional prime sieves. Assuming the generalized Riemann hypothesis, we modify a resul...
Carter Bays, Richard H. Hudson
ICITS
2009
15 years 4 months ago
Free-Start Distinguishing: Combining Two Types of Indistinguishability Amplification
Abstract. The term indistinguishability amplification refers to a setting where a certain construction combines two (or more) cryptographic primitives of the same type to improve t...
Peter Gazi, Ueli Maurer
PODC
2011
ACM
14 years 9 months ago
Securing social networks
We present a cryptographic framework to achieve access control, privacy of social relations, secrecy of resources, and anonymity of users in social networks. The main idea is to u...
Michael Backes, Matteo Maffei, Kim Pecina
WWW
2008
ACM
16 years 7 months ago
The scale-free nature of semantic web ontology
Semantic web ontology languages, such as OWL, have been widely used for knowledge representation. Through empirical analysis of real-world ontologies we discover that, like many n...
Hongyu Zhang