Abstract
American Journal of Mathematics, vol. xii., No. 2 (Baltimore, January 1890).—The number opens with the concluding part of Mr. Forsyth's paper on “Systems of Ternariants that are Algebraically Complete” (pp. 115-160). It is illustrated with numerous tables and closed with a useful abstract of contents.—In the following memoir (pp. 161-190), by Prof. Franklin, on “Some Applications of Circular Co-ordinates,” the author investigates, with the aid of these co-ordinates, some interesting theorems relating to the orientation of systems of lines given in a recent volume (vol. x. p. 258) by M. Humbert. Several further illustrations are given, and the memoir closes with a discussion of the curve given by the equation sin xdx = sin ydy.— Mr. F. N. Cole writes (pp. 191-212) on “Rotations in Space of Four Dimensions.” The present article is preliminary to a second paper on groups of rotations in four-dimensional space which is to follow.
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Scientific Serials. Nature 41, 332 (1890). https://doi.org/10.1038/041332b0
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DOI: https://doi.org/10.1038/041332b0