invariant

Not varying; constant.

Unaffected by a designated operation, as a transformation of coordinates.

An invariant quantity, function, configuration, or system.

Not varying or changing; remaining always the same.

In mathematics, a function of the coefficients of a quantic such that, if the quantic is linearly transformed, the same function of the new coefficients is equal to the first function multiplied by some power of the modulus of transformation.

See the adjectives.

In physical chemistry, having a variance equal to zero.

An entity compounded of constituents, some of them subject to change or variation, which, despite this change, remains itself unchanged.

An invariable quantity; specifically, a function of the coefficients of one or more forms, which remains unaltered, when these undergo suitable linear transformations.

not varying; constant