Bounded Queries in Recursion Theory (Hardcover)

William Levine

ISBN 10: 0817639667 / ISBN 13: 9780817639662

Published by Birkhauser Boston Inc, Secaucus, 1998

About this Item

Hardcover. 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. 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). In recursion theory, by contrast, a function is considered to be easy to compute if there exists some algorithm that computes it. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

Seller Inventory # 9780817639662

Bibliographic Details

• Title: Bounded Queries in Recursion Theory (Hardcover)
• Publisher: Birkhauser Boston Inc, Secaucus
• Publication Date: 1998
• Language: English
• ISBN 10: 0817639667
• ISBN 13: 9780817639662
• Binding: Hardcover
• Condition: new

About this title

Synopsis

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.

Review

"Ideal for an advanced undergraduate or beginning graduate student who has some exposure to basic computability theory and wants to see what one can do with it. The questions asked are interesting and can be easily understood and the proofs can be followed without a large amount of training in computability theory."

--Sigact News