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The elements of the unit cell are expressed in the coefficients A
F of the quadratic form 1/d2 = Q(h,k,l), and a table of derivatives δa/δAδ cos γ/δF is given. The elements of Delaunay's foursider are calculated in a simple way from AF.
F of the quadratic form 1/d2 = Q(h,k,l), and a table of derivatives δa/δAδ cos γ/δF is given. The elements of Delaunay's foursider are calculated in a simple way from AF.
