On 10 April 2011 19:37, Raul Miller <[email protected]> wrote: > General identities cannot exist. > > Identity functions are only valid in domains which allow them.
When discussing a particular function, a general identity is any one that holds in all cases where that function is applicable. Such general identities do exist and are widely used. A good example is an identity used to define a function in a functional language. In contrast, the identity from the aricle on / in the Dictionary is far from general. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
