definition
Sameness, identicalness; the quality or fact of (several specified things) being the same.
definition
The difference or character that marks off an individual or collective from the rest of the same kind, selfhood, sense of who something or someone or oneself is, or the recurring characteristics that enable the recognition of such an individual or group by others or themself.
example
I've been through so many changes, I have no sense of identity.
definition
A name or persona—a mask or appearance one presents to the world—by which one is known.
example
This criminal has taken on several identities.
definition
An equation which always holds true regardless of the choice of input variables.
definition
Any function which maps all elements of its domain to themselves.
definition
An element of an algebraic structure which, when applied to another element under an operation in that structure, yields this second element.
definition
A well-known or famous person.
example
2013 April 4, "Cricket identities consult lawyers", New Zealand Herald