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    • The Method of Quarter Squares1 - Nature

      Nature· 2 days ago

      THE method of quarter squares consists in the use of the formula ab = ¼(a+b)2 - ¼(a-b)2 to effect the multiplication of two numbers, a and b. If we are ...

    • Societies and Academies - Nature

      Nature· 2 days ago

      The present communication describes the results of experiments carried out with this substance and some aromatic aldehydes. The starting substance, CH3.CO.C(CH3) = CH.C6H3.O2CH2, was prepared ...