Sciweavers

TCS
2002
13 years 11 months ago
Restriction categories I: categories of partial maps
Given a category with a stable system of monics, one can form the corresponding category of partial maps. To each map in this category there is, on the domain of the map, an assoc...
J. Robin B. Cockett, Stephen Lack
TCS
2002
13 years 11 months ago
A coalgebraic equational approach to specifying observational structures
A coalgebraic, equational approach to the speci
Corina Cîrstea
TCS
2002
13 years 11 months ago
Associative language descriptions
The new Associative Language Description (ALD) model, a combination of locally testable and constituent structure ideas, is proposed, arguing that in practice it equals context-fr...
Alessandra Cherubini, Stefano Crespi-Reghizzi, Pie...
TCS
2002
13 years 11 months ago
Streams and strings in formal proofs
Streams are acyclic directed subgraphs of the logical ow graph of a proof representing bundles of paths with the same origin and the same end. The notion of stream is used to desc...
Alessandra Carbone
TCS
2002
13 years 11 months ago
A characterization of c.e. random reals
A real is computably enumerable if it is the limit of a computable, increasing, converging sequence of rationals. A real is random if its binary expansion is a random sequence. Ou...
Cristian Calude
TCS
2002
13 years 11 months ago
Threshold counters with increments and decrements
A threshold counter is a shared data structure that assumes integer values. It provides two operations:Increment changesthe current counter value from v to v
Costas Busch, Neophytos Demetriou, Maurice Herlihy...
TCS
2002
13 years 11 months ago
Complexity measures and decision tree complexity: a survey
We discuss several complexity measures for Boolean functions: certi cate complexity, sensitivity, block sensitivity, and the degree of a representing or approximating polynomial. ...
Harry Buhrman, Ronald de Wolf
TCS
2002
13 years 11 months ago
Logical systems for structured specifications
We study proof systems for reasoning about logical consequences and refinement of structured specifications, based on similar systems proposed earlier in the literature [ST 88, Wi...
Tomasz Borzyszkowski
TCS
2002
13 years 11 months ago
ELAN from a rewriting logic point of view
ELAN implements computational systems, a concept that combines two first class entities: rewrite rules and rewriting strategies. ELAN can be used either as a logical framework or ...
Peter Borovanský, Claude Kirchner, Hé...