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1 definition by MoHare

 
1.
Certainly an abbreviation of quod erat demonstrandum but after watching, suffering through, proving thousands of proofs, a math major might just say Quite Easily Done.

The final line of many proofs of the Pythagorean Theorem.

a squared + b squared = c squared

Q.E.D.
by MoHare April 30, 2008