[1] : WordNet (r) 2.0

identity element
     n : an operator that leaves unchanged the element on which it
         operates; "the identity under numerical multiplication is
         1" syn: identity, identity operator
see also:
identity identity operator 

Element >> E Words
Element, definition of term: Element
element_pag1.html

Identity >> I Words
Identity, definition of term: Identity
identity_pag1.html

Identity Elemen >> I Words
Identity Elemen, definition of term: Identity Elemen
identity+elemen_pag1.html

Trace Element >> T Words
Trace Element, definition of term: Trace Element
trace+element_pag1.html