Titlebook: Logic and Computational Complexity; International Worksh Daniel Leivant Conference proceedings 1995 The Editor(s) (if applicable) and The A

搖曳

Some consequences of cryptographical conjectures for S 2 1 and EF,em RSA is secure. Further we show that factoring and the discrete logarithm are implicitly definable in any extension of .. admitting an . -definition of primes about which it can prove that no number satisfying the definition is composite..As a corollary we obtain that the Extended Frege (EF) proof

Affiliation

輕而薄

Type 2 polynomial hierarchies,e survey most of the notions of type 2 poly-hierarchies already proposed in the literature and present two natural definitions of type 2 poly-hierarchies. We also introduce various resource bounded reductions between functionals of type 2.

粘土

Feasibly categorical models,he same family are feasibly isomorphic. For example, if . and . possess a common strongly p-time Scott family and both have universe {1}., then they are p-time isomorphic. These results are applied to the study of permutation structures, linear orderings, equivalence relations, and Abelian groups. F

infatuation

A restricted second order logic for finite structures,alence relation ≡. of . variable equivalence, for some .. This restricted second order logic is an effective fragment of the infinitary logic .., which differs from other such fragments in that it is not based on a fixpoint logic. We explore the relationship of SO. with fixpoint logics, showing that

Thyroid-Gland

Conference proceedings 1995eld in Indianapolis, IN in October 1994..The synergy between logic and computational complexity has gained importance and vigor in recent years, cutting across many areas. The 25 revised full papers in this book contributed by internationally outstanding researchers document the state-of-the-art in

ironic

Sigmoidoscopy

On feasible numbers,seems to be treated rigorously here for the first time. Our technical considerations, though quite simple, have some unusual consequences. A discussion of methodological questions and of relevance to the foundations of mathematics and of computer science is an essential part of the paper.

折磨

Ceremony