Thus, we may speak of the universe of discourse <math>X^\circ</math> as being an ordered pair <math>(X, X^\uparrow),</math> with <math>2^n\!</math> points in the underlying space <math>X\!</math> and <math>2^{2^n}</math> propositions in the function space <math>X^\uparrow.</math> | Thus, we may speak of the universe of discourse <math>X^\circ</math> as being an ordered pair <math>(X, X^\uparrow),</math> with <math>2^n\!</math> points in the underlying space <math>X\!</math> and <math>2^{2^n}</math> propositions in the function space <math>X^\uparrow.</math> |