1: Propositional Logic
- Page ID
- 23884
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The grand aim of all science is to cover the greatest number of empirical facts
by logical deduction from the smallest number of hypotheses or axioms.
Albert Einstein (1879–1955), Nobel prize-winning physicis
in Life magazine
For our purposes, Logic is the business of deciding whether or not a deduction is valid; that is, deciding whether or not a particular conclusion is a consequence of particular assumptions. (The assumptions can also be called “hypotheses” or “axioms.”)
- 1.2: Logic Puzzles
- Clear thinking (or logic) is important not only in mathematics, but in everyday life, and can also be fun; many logic puzzles (or brain teasers) can be found on the internet or in bookstores.