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Date: 2007-07-25 14:17:38 Proof theory Mathematical proofs Logical syntax Logical truth Theorem Pythagorean theorem Proof by contradiction Formal proof Mathematical induction Mathematics Logic Mathematical logic		Add to Reading List Source URL: www.math.wustl.edu Download Document from Source Website File Size: 2,59 MB Share Document on Facebook

	1. Proof by contradiction Po-Shen Loh CMU Putnam Seminar, Fall DocID: 1pxfX - View Document
	Solutions for Exercises for Propositional Logic 1. Proof by induction. 2. • A tautology: (p ∨ (¬p ∨ (q ∨ (r ∨ s)))) • A contradiction: (p ∧ (¬p ∧ (q ∧ (r ∧ s)))) DocID: 1laPO - View Document
	An Innocent Investigation D. Joyce, Clark University January 2006 The beginning. Have you ever wondered why every number is either even or odd? I don’t mean to ask if you ever wondered whether every number DocID: 18aB8 - View Document
	CS109A Notes for LectureThe Essence of Proof Mathematical proof is essentially persuasive prose. Like an essay, it is eective if it convinces the listener. Also like an essay, we can learn certain rhetorica DocID: 15plt - View Document
	CS109B Notes for LectureTautologies Logical expressions that evaluate to TRUE for any truth-assignment. Embody reasoning principles. DocID: 15gwy - View Document