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Forum URL: http://www.cut-the-knot.org/cgi-bin/dcforum/forumctk.cgi
Forum Name: College math
Topic ID: 56
Message ID: 1
#1, RE: inquiring mind wants to know...
Posted by alexb on Feb-12-01 at 08:54 AM
In response to message #0
QED is abbreviation for (Latin) quod erat demonstrandum - that which was to be proved. This I believe originates with Euclid's Elements.