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# Inverse

[adjective, noun in-vurs, in-vurs; verb in-vurs] /adjective, noun ɪnˈvɜrs, ˈɪn vɜrs; verb ɪnˈvɜrs/

1.
reversed in position, order, direction, or tendency.
2.
Mathematics.

3.
inverted; turned upside down.
noun
4.
an inverted state or condition.
5.
something that is inverse; the direct opposite.
6.
Mathematics.

verb (used with object), inversed, inversing.
7.
to .
/ɪnˈvɜːs; ˈɪnvɜːs/
1.
opposite or contrary in effect, sequence, direction, etc
2.
(maths)

3.
(usually prenominal) upside-down; inverted: in an inverse position
noun
4.
(maths)

5.
(logic) a categorial proposition derived from another by changing both the proposition and its subject from affirmative to negative, or vice versa, as all immortals are angels from no mortals are angels

mid-15c., from Latin inversus, past participle of invertere (see invert). Related: Inversely. As a noun, 1680s, from the adjective.
inverse
Relating to a mathematical operation whose nature or effect is the opposite of another operation. For example, addition and subtraction are inverse operations, as are multiplication and division.

Noun (ĭn’vûrs’)

mathematics
Given a function, f : D -> C, a function g : C -> D is called a left inverse for f if for all d in D, g (f d) = d and a right inverse if, for all c in C, f (g c) = c and an inverse if both conditions hold. Only an injection has a left inverse, only a surjection has a right inverse and only a bijection has inverses. The inverse of f is often written as f with a -1 superscript.
(1996-03-12)

Tagged:

networking, protocol (InARP) Additions to ARP typically used for Frame Relay. [Any other examples of its use?] Frame Relay stations route frames of a higher level protocol between LANs, across a Permanent Virtual Circuit. These stations are identified by their Data Link Control Identifier (DLCI), equivalent to an Ethernet address in a LAN itself. InARP […]

• Inverse comment convention

programming A kind of literate programming where the program code is marked to distinguish it from the text, rather than the other way around as in normal programs. (2003-09-24)

• Intussusception

[in-tuh s-suh-sep-shuh n] /ˌɪn təs səˈsɛp ʃən/ noun 1. a taking within. 2. Biology. growth of a cell wall by the deposition of new particles among the existing particles of the wall. Compare (def 4). 3. Also called invagination. Pathology. the slipping of one part within another, as of the intestine. /ˌɪntəssəˈsɛpʃən/ noun 1. (pathol) […]

• Intussusceptum

intussusceptum in·tus·sus·cep·tum (ĭn’tə-sə-sěp’təm) n. The part of the bowel that is invaginated within another part in an intussusception.

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