EN34
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3 revisions | jasirs94 at Nov 20, 2016 02:34 AM | |
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34G35 syllogical substages of deduction, or definitory and ratiocinative deduction. The former includes the analysis of concepts, the acquisition of distinct ideas, and the transformation of them into fruitful forms. A whole class of demonstrations that have given mathematicians no little trouble, such for example as that discovery of Euler's which forms the 25th proposition of the VIIth book of Legendre's Éléments de géométrie, the sum of the number of faces and summits of an ordinary polyhedron exceeds the number of edges by | 34 |