Mathematical Proofs: Where to Begin And How to Write Them

1. a proof must always begin with an initial statement of what it is you intend to prove. it should not be phrased as a textbook question (“prove that.”); rather, the initial statement should be phrased as a theorem or proposition. it should be self-contained, in that it defines all variables that appear in it. after you’ve written what it is … ................
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