constructible
A function is time constructible if there is a deterministic Turing machine (with alphabet ) such that when receives as input the a series of ones, it halts after exactly steps. Similarly is space constructible if there is a similar Turing machine which halts after using exactly cells.
Most ’natural’ functions are both time and space constructible, including constant functions, polynomials, and exponentials, for example.
Title | constructible |
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Canonical name | Constructible |
Date of creation | 2013-03-22 13:03:20 |
Last modified on | 2013-03-22 13:03:20 |
Owner | Henry (455) |
Last modified by | Henry (455) |
Numerical id | 7 |
Author | Henry (455) |
Entry type | Definition |
Classification | msc 68Q15 |
Defines | time constructible |
Defines | space constructible |