Timed Sets, Functional Complexity, and Computability

Autor: Pavel Hrubeš, Robin Cockett, JoaquíN DíAz-BoïLs, Jonathan Gallagher
Rok vydání: 2012
Předmět:
Zdroj: MFPS
ISSN: 1571-0661
DOI: 10.1016/j.entcs.2012.08.009
Popis: The construction of various categories of “timed sets” is described in which the timing of maps is considered modulo a “complexity order”. The properties of these categories are developed: under appropriate conditions they form discrete, distributive restriction categories with an iteration. They provide a categorical basis for modeling functional complexity classes and allow the development of computability within these settings. Indeed, by considering “program objects” and the functions they compute, one can obtain models of computability – i.e. Turing categories – in which the total maps belong to specific complexity classes. Two examples of this are introduced in some detail which respectively have their total maps corresponding to PTIME and LOGSPACE.
Databáze: OpenAIRE