Książka Bounded Queries in Recursion Theory William Gasarch

Bounded Queries in Recursion Theory

Język: Angielski
Oprawa: Twarda
Dostępność: Dostępna u dostawcy w małych ilościach
Wysyłamy za 13-18 dni
470.91
One of the major concerns of theoretical computer science is the classifi cation of problems in term...

Informacje o książce

Język
Angielski
Oprawa
Książka - Twarda
Data wydania
1998
strony
353
EAN
9780817639662
ISBN
0817639667
Enbook ID
01399169
Waga
1550
Wymiary
155 x 235 x 25

Pełny opis

One of the major concerns of theoretical computer science is the classifi cation of problems in terms of how hard they are. The natural measure of difficulty of a function is the amount of time needed to compute it (as a function of the length of the input). Other resources, such as space, have also been considered. In recursion theory, by contrast, a function is considered to be easy to compute if there exists some algorithm that computes it. We wish to classify functions that are hard, i.e., not computable, in a quantitative way. We cannot use time or space, since the functions are not even computable. We cannot use Turing degree, since this notion is not quantitative. Hence we need a new notion of complexity-much like time or spac~that is quantitative and yet in some way captures the level of difficulty (such as the Turing degree) of a function.

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