operation (redirected from Hartmann's operation)

operation

1. Surgery any manipulation of the body or one of its organs or parts to repair damage, arrest the progress of a disease, remove foreign matter, etc.

2. Maths

a. any procedure, such as addition, multiplication, involution, or differentiation, in which one or more numbers or quantities are operated upon according to specific rules

b. a function from a set onto itself

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operation [‚äp·ə′rā·shən]

(computer science)

A process or procedure that obtains a unique result from any permissible combination of operands.

The sequence of actions resulting from the execution of one digital computer instruction.

(industrial engineering)

A job, usually performed in one location, and consisting of one or more work elements.

(mathematics)

An operation of a groupGon a setSis a mapping which associates to each ordered pair (g,s), wheregis inGandsis inS, another element inS, denotedgs, such that, for anyg,hinGandsinS, (gh)s=g(hs), andes=s, whereeis the identity element ofG.