June 27, 2016: Basic Mathematics

„Proof of the Irrationality of the Square Root of 2“, extended with exercises with solutions, 12 resp. 15 pages.

English versions: A4, A4-dup­lex, US-Let­ter, US-Let­ter-dup­lex.

German versions: A4, A4-dup­lex, US-Let­ter, US-Let­ter-dup­lex.





28. May 2011: Our Roses (allotment)

Unsere Rosen im Sommer 2011

Our roses, three images (880 times 660), 700 times 660.












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