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Now consider a propositional function Fx in which the variable argument x is itself a propositional function.

10Call it a propositional function; and, if 4)x be a propositional function, the undetermined variable x is the argument.

00A similar theory holds for relations which arise from the consideration of propositional functions with two or more variable arguments.

00The road to hell: intentions & propositional attitude ascription.

00The satisfiability problem for the propositional calculus; Cook's theorem.

00We take the propositional connectives & and ¬ to be primitive; other propositional connectives are defined as usual.

00MaGIC (Matrix Generator for implication connectives) is a program which finds matrices for implication connectives for a wide range of propositional logics.

00Propositional logic Define a data type to represent formulae of propositional logic.

00In theology truth is propositional tied up in neat parcels, systematized, and arranged in logical order.

00Call it a propositional function; and, if 4)x be a propositional function, the undetermined variable x is the argument.

00Two propositional functions 4)x and fix are "extensionally identical" if any determination of x in 4)x which converts 4)x into a true proposition also converts 4'x into a true proposition, and conversely for 4' and 4).

00Now consider a propositional function Fx in which the variable argument x is itself a propositional function.

00If Fx is true when, and only when, x is determined to be either 4) or some other propositional function extensionally equivalent to (A, then the proposition F4 is of the form which is ordinarily recognized as being about the class determined by )x taken in extension - that is, the class of entities for which 4)x is a true proposition when x is determined to be any one of them.

00A similar theory holds for relations which arise from the consideration of propositional functions with two or more variable arguments.

00It 's a language that chimes with the propositional logic of the workplace, the language of league tables and utilitarian calculation.

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