Among the <math>2^{2^n}</math> propositions or functions in ('''B'''<sup>''n''</sup> → '''B''') are several fundamental sets of 2<sup>''n''</sup> propositions each that take on special forms with respect to a given basis <font face="lucida calligraphy">A</font> = {''a''<sub>''i''</sub>}. Three of these forms are especially common, the ''linear'', the ''positive'', and the ''singular'' | Among the <math>2^{2^n}</math> propositions or functions in ('''B'''<sup>''n''</sup> → '''B''') are several fundamental sets of 2<sup>''n''</sup> propositions each that take on special forms with respect to a given basis <font face="lucida calligraphy">A</font> = {''a''<sub>''i''</sub>}. Three of these forms are especially common, the ''linear'', the ''positive'', and the ''singular'' |