nonrealizable

English

Etymology

From non- +‎ realizable.

Adjective

nonrealizable (not comparable)

1. Not realizable.
2. (mathematics) That cannot be constructed or represented within a specific mathematical framework or system.
   • 1883, Science, volume 120, American Association for the Advancement of Science:

     The term repetition, as applied tp an event of nature, is clearly ideal and nonrealizable in any concrete case, like the term equality and the term circle. No two concrete objects in nature ever ideally equal in every respect.

   • 1971 June 26, James L Melsa, System Identification, Academic Press, page 31:

     This method appears promissing for on-line identification, and it appears to be emminently satisfactory for off-line use, where physically nonrealizable filter characteristics can be simulated to permit identification rates which approach the maximum.

   • 2013 October 22, Julius T. Tou, Applied Automata Theory, Academic Press, page 297:

     It should be clear that the parallel structure makes the function nonrealizable, since it is not possible to pass a plane through an n-cube which will dichotomize the function.