1. a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it;

1. unaffected by a designated operation or transformation;

2. unvarying in nature;

- Example: "maintained a constant temperature"

- Example: "principles of unvarying validity"

[syn: changeless, constant,

The Collaborative International Dictionary of English v.0.48:

Invariant \In*va"ri*ant\, n. (Math.) An invariable quantity; specifically, a function of the coefficients of one or more forms, which remains unaltered, when these undergo suitable linear transformations. --J. J. Sylvester. [1913 Webster]WordNet (r) 3.0 (2006):

invariant adj 1: unaffected by a designated operation or transformation 2: unvarying in nature; "maintained a constant temperature"; "principles of unvarying validity" [syn: changeless, constant, invariant, unvarying] n 1: a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to itThe Free On-line Dictionary of Computing (18 March 2015):

invariantA rule, such as the ordering of an ordered list or heap, that applies throughout the life of a data structure or procedure. Each change to the data structure must maintain the correctness of the invariant. (1996-03-12)