A distinguishing feature of a person or thing.
For a given field or ring, a natural number that is either the smallest positive number n such that n instances of the multiplicative identity (1) summed together yield the additive identity (0) or, if no such number exists, the number 0.
The integer part of a logarithm.
The distinguishing features of a navigational light on a lighthouse etc by which it can be identified (colour, pattern of flashes etc.).
Being a distinguishing feature of a person or thing.
Something representing or standing for another; a symbol, an embodiment.
Someone who represents others as a member of a legislative or governing body.
One who speaks for or acts on behalf of another in a particular (especially official) capacity.
An heir.
A member of a particular class.
A substitute or analogue.
A company agent who visits potential purchasers; a salesman.
Something (especially a living organism) regarded as typical of its class; a type.
Specifically, a member of the United States House of Representatives.
Representing, showing a likeness.
Typical; having the same properties or interest as a larger group.