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ESOP
2008
Springer
15 years 7 months ago
A Realizability Model for Impredicative Hoare Type Theory
We present a denotational model of impredicative Hoare Type Theory, a very expressive dependent type theory in which one can and reason about mutable abstract data types. The model...
Rasmus Lerchedahl Petersen, Lars Birkedal, Aleksan...
FC
2008
Springer
102views Cryptology» more  FC 2008»
15 years 7 months ago
Identity Theft: Much Too Easy? A Study of Online Systems in Norway
Governments and commercial companies connect more and more computer systems to the Internet, giving people easier access to services. Many of these online services handle personal ...
André N. Klingsheim, Kjell Jørgen Ho...
CIE
2008
Springer
15 years 6 months ago
First-Order Model Checking Problems Parameterized by the Model
We study the complexity of the model checking problem, for fixed models A, over certain fragments L of first-order logic, obtained by restricting which of the quantifiers and boole...
Barnaby Martin
CORR
2008
Springer
92views Education» more  CORR 2008»
15 years 6 months ago
On sign conditions over real multivariate polynomials
We present a new probabilistic algorithm to find a finite set of points intersecting the closure of each connected component of the realization of every sign condition over a fami...
Gabriela Jeronimo, Daniel Perrucci, Juan Sabia
CORR
2008
Springer
74views Education» more  CORR 2008»
15 years 6 months ago
Shortest Vertex-Disjoint Two-Face Paths in Planar Graphs
Abstract. Let G be a directed planar graph of complexity n, each arc having a nonnegative length. Let s and t be two distinct faces of G; let s1, . . . , sk be vertices incident wi...
Éric Colin de Verdière, Alexander Sc...