A.N. Whitehead and R. Carnap(1931). At the hands of Bertrand Russell the claims of logicism received the clearest and most explicit formulation. There are two claims:
1 All the concepts of mathematics can ultimately be reduced to logical concepts, provided that these are taken to include the concepts of set theory or some system of similar power, such as Russell’s Theory of Types.
2 All mathematical truths can be proved from the axioms and rules of inference of logic alone.
The purpose of these claims is clear. If all of mathematics can be expressed in purely logical terms and proved from logical principles alone, then the certainty of mathematical knowledge can be reduced to that of logic. Logic was considered to provide a certain foundation for truth, apart from over-ambitious attempts to extend logic, such as Frege’sFifth Law. Thus if carried through, the logicistprogramme would provide certain logical foundations for mathematical knowledge, reestablishing absolute certainty in mathematics.
A.N. Whitehead and R. Carnap(1931). At the hands of Bertrand Russell the claims of logicism received the clearest and most explicit formulation. There are two claims:
1 All the concepts of mathematics can ultimately be reduced to logical concepts, provided that these are taken to include the concepts of set theory or some system of similar power, such as Russell’s Theory of Types.
2 All mathematical truths can be proved from the axioms and rules of inference of logic alone.
The purpose of these claims is clear. If all of mathematics can be expressed in purely logical terms and proved from logical principles alone, then the certainty of mathematical knowledge can be reduced to that of logic. Logic was considered to provide a certain foundation for truth, apart from over-ambitious attempts to extend logic, such as Frege’sFifth Law. Thus if carried through, the logicistprogramme would provide certain logical foundations for mathematical knowledge, reestablishing absolute certainty in mathematics.
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