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Monthly Archives: June 2009

THE MATH PROBLEM LEONARDO COULDN’T SOLVE

The artist Uffenbach’ss extremely rare tract on squaring the circle UFFENBACH, Philipp. De Quadratura circuli mechanici. Das ist: Ein newer Kurtzer, hochnützlicher und leichter mechanischer Tractat und bericht von der Quadratur dess Circkels, etc. in Verlegung dess Authoris: Franckfurt, 1619. 19th cebtury marbled boards. VERY RARE.  No copies in 30 years of the ABPC auction...

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