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IPL
1998
68views more  IPL 1998»
15 years 7 months ago
Fast Nondeterministic Recognition of Context-Free Languages Using two Queues
We show how to accept a context-free language nondeterministically in O( n log n) time on a two-queue machine.
Burton Rosenberg
JCSS
1998
65views more  JCSS 1998»
15 years 7 months ago
Good Degree Bounds on Nullstellensatz Refutations of the Induction Principle
This paper gives nearly optimal, logarithmic upper and lower bounds on the minimum degree of Nullstellensatz refutations (i.e., polynomials) of the propositional induction princip...
Samuel R. Buss, Toniann Pitassi
JOOP
1998
86views more  JOOP 1998»
15 years 7 months ago
Prelude to a Theory of Void
A set of rules to ascertain that in calls of the form x.f (...) there will always be an object attached to x. 1 PURPOSE The theory developed in this article investigates void call...
Bertrand Meyer
JSC
1998
77views more  JSC 1998»
15 years 7 months ago
Explicit Bounds for the Solutions of Elliptic Equations with Rational Coefficients
Abstract. In this paper we give new, improved explicit upper bounds for the absolute values of the integer solutions and for the heights of S-integer solutions of elliptic equation...
Lajos Hajdu, T. Herendi
MLQ
1998
74views more  MLQ 1998»
15 years 7 months ago
Disjoint Unions of Topological Spaces and Choice
We find properties of topological spaces which are not shared by disjoint unions in the absence of some form of the Axiom of Choice.
Paul E. Howard, Kyriakos Keremedis, Herman Rubin, ...