MyWikiBiz, Author Your Legacy — Tuesday November 04, 2025
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		,  14:28, 19 November 2008
	
 
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|   | ====Higher Order Propositions and Logical Operators (''n'' = 2)====  |   | ====Higher Order Propositions and Logical Operators (''n'' = 2)====  | 
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| − | By way of reviewing notation and preparing to extend it to higher order universes of discourse, let us first consider the universe of discourse <math>X^\circ = [X] = [x_1, x_2] = [x, y],</math> based on two logical features or boolean variables <math>x\!</math> and <math>y.\!</math>  | + | By way of reviewing notation and preparing to extend it to higher order universes of discourse, let us first consider the universe of discourse <math>X^\circ = [\mathcal{X}] = [x_1, x_2] = [x, y],</math> based on two logical features or boolean variables <math>x\!</math> and <math>y.\!</math>  | 
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