inverse

An inverted state: a state in which something has been turned (properly) upside down or inside out or backwards.

“321 is the inverse of 123.”

The result of an inversion, particularly:

A second element which negates a first; in a binary operation, the element for which the binary operation—when applied to both it and an initially given element—yields the operation's identity element, specifically:

A morphism which is both a left inverse and a right inverse.

The winning of the coup in a game of rouge et noir by a card of a color different from that first dealt; the area of the table reserved for bets upon such an outcome.

(Kiowa-Tanoan) A grammatical number marking that indicates the opposite grammatical number (or numbers) of the default number specification of noun class.

To compute the bearing and distance between two points.

Opposite in effect, nature or order.

Reverse, opposite in order.

Inverted; having a position or mode of attachment the reverse of that which is usual.

Having the properties of an inverse; said with reference to any two operations, which, when both are performed in succession upon any quantity, reproduce that quantity.

“Multiplication is the inverse operation to division.”

That has the property of being an inverse (the result of a circle inversion of a given point or geometrical figure); that is constructed by circle inversion.

“A circle inversion maps a given generalized circle to its inverse generalized circle.”

(of a category) Whose every element has an inverse (morphism which is both a left inverse and a right inverse).