(logic) a proposition that is accepted as true in order to provide a basis for logical reasoning
Verb:
maintain or assert;
"He contended that Communism had no future"
take as a given; assume as a postulate or axiom;
"He posited three basic laws of nature"
require as useful, just, or proper;
"It takes nerve to do what she did" "success usually requires hard work" "This job asks a lot of patience and skill" "This position demands a lot of personal sacrifice" "This dinner calls for a spectacular dessert" "This intervention does not postulate a patient's consent"