Mathematics.Mathematical Jokes and Puzzles

Mathematics Forum

Author	Message / Information
mathemagician Quote \| Reply \|	Russell posted on: 9/5/2002 7:06:39 AM A famous problem: Prove that "if 4=5 then Russell is the Pope of Rome"
Soroban Quote \| Reply \| This message was updated on 9/11/2002 1:19:19 PM by Soroban	Re: Russell replied on: 9/5/2002 3:43:50 PM Yes, it is a classic. We have "5 = 4". Subtract 3 from both sides: 2 = 1. Russell and the Pope are are two people. Since "2 = 1", they are one. Acceptable, Your Holiness? (I corrected the "Popare" blunder.)
montecristo0612 Quote \| Reply \|	Re: Russell replied on: 9/11/2002 12:29:20 AM Whoa! BTW, What is Popare? If you would not mind? Math rules!!!
symbolstring Quote \| Reply \|	Re: Russell replied on: 9/20/2002 1:52:19 PM This is an excellent demonstration that "anything follows from a contradiction." In classical logic: From ~p infer p->q.
davo Quote \| Reply \|	Re: Russell replied on: 6/8/2007 7:41:12 AM let p:5=4 q:Russel is the pope of Rome the statement can be changed to p implies q but the truth value of p is false and the truth value of q is either true or false and since false implies false or false implies true is always true the statement is true.
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