Image:PM1+1=2lemma.jpg

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[edit] Summary

Scan of theorem *54.43 from Whitehead and Russell's Principia Mathematica, an important lemma on the way to proving that 1+1=2.

[edit] Licensing

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	Date/Time	Dimensions	User	Comment
current	01:54, 19 June 2006	526×199 (34 KB)	Dominus (Talk \| contribs)	(Scan of theorem *54.43 from Whitehead and Russell's _Principia Mathematica_, an important lemma on the way to proving that 1+1=2. )