Description: AxiomSimp. Axiom A1 of Margaris p. 49. One of the 3 axioms of
propositional calculus. The 3 axioms are also given as Definition 2.1 of
Hamilton p. 28. This axiom is calledSimp or "the principle of
simplification" inPrincipia Mathematica (Theorem *2.02 of
WhiteheadRussell p. 100) because "it enables us to pass from the joint
assertion of ph and ps to the assertion of ph simply". It is
Proposition 1 of Frege1879 p. 26, its first axiom. (Contributed by NM, 30-Sep-1992)