Copyright © Philip M. Parker, INSEAD. Terms of Use.

COMPUTABILITY THEORY

Specialty Definition: COMPUTABILITY THEORY

Domain	Definition
Computing	Computability theory The area of theoretical computer science concerning what problems can be solved by any computer. A function is computable if an algorithm can be implemented which will give the correct output for any valid input. Since computer programs are countable but real numbers are not, it follows that there must exist real numbers that cannot be calculated by any program. Unfortunately, by definition, there isn't an easy way of describing any of them! In fact, there are many tasks (not just calculating real numbers) that computers cannot perform. The most well-known is the halting problem, the busy beaver problem is less famous but just as fascinating. ["Computability", N.J. Cutland. (A well written undergraduate-level introduction to the subject)]. ["The Turing Omnibus", A.K. Dewdeney]. (1995-01-13). Source: The Free On-line Dictionary of Computing.
Source: compiled by the editor from various references; see credits.

Crosswords: COMPUTABILITY THEORY

Specialty definitions using "COMPUTABILITY THEORY": Finite State Machine. (references)

Commercial Usage: COMPUTABILITY THEORY

Domain	Title
Books	Computability Theory (reference) Turing's World 3.0 for Mac : An Introduction to Computability Theory (reference) (more book examples)
Source: compiled by the editor from various references; see credits.

Anagrams: COMPUTABILITY THEORY

Scrabble® Enable2K-Verified Anagrams
	Words within the letters "a-b-c-e-h-i-i-l-m-o-o-p-r-t-t-t-u-y-y"
	-4 letters: hypermutability.
Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.

Alternative Orthography: COMPUTABILITY THEORY

Hexadecimal (or equivalents, 770AD-1900s) (references)

43 4F 4D 50 55 54 41 42 49 4C 49 54 59 54 48 45 4F 52 59

Leonardo da Vinci (1452-1519; backwards) (references)

Binary Code (1918-1938, probably earlier) (references)

01000011 01001111 01001101 01010000 01010101 01010100 01000001 01000010 01001001 01001100 01001001 01010100 01011001 00100000 01010100 01001000 01000101 01001111 01010010 01011001

HTML Code (1990) (references)

&#67 &#79 &#77 &#80 &#85 &#84 &#65 &#66 &#73 &#76 &#73 &#84 &#89 &#32 &#84 &#72 &#69 &#79 &#82 &#89

ISO 10646 (1991-1993) (references)

0043 004F 004D 0050 0055 0054 0041 0042 0049 004C 0049 0054 0059 0054 0048 0045 004F 0052 0059

Encryption (beginner's substitution cypher): (references)

374947505554353643464354592544239495259

INDEX

1. Crosswords
2. Usage: Commercial
3. Anagrams
4. Orthography

5. Bibliography

Copyright © Philip M. Parker, INSEAD. Terms of Use.