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This scarce antiquarian book is included in our special Legacy Reprint Series. In the interest of creating a more extensive selection of rare historical book reprints, we have chosen to reproduce this title even though it may possibly have occasional imperfections such as missing and blurred pages, missing text, poor pictures, markings, dark backgrounds and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as a part of our commitment to protecting, preserving and promoting the world's literature.
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From the Proceedings of theL ondon Mathematical Society, vol. v. (1873 1874), pp. 14 25. Read December 11, 1S73.] I HAVE constructed a model and drawings of the symmetrical form of Steiner sS urface, viz. that wherein the four singular tangent planes form a regular tetrahedron, and consequently the three nodal lines (being the lines joining the mid-points of opposite edges) a system of rectangular axes at the centre of the tetrahedron. Before going into the analytical theory, I describe as follows the general form of the surface: take the tetrahedron, and inscribe in each face a circle (there will be, of course, two circles touching at the mid-point of each edge of the tetrahedron; each circle will contain, on its circumference at angular distances of 120 ,three mid-points, and the lines joining these with the centre of the tetrahedron, produced beyond the centre, meet the opposite edges, and are in fact the before-mentioned lines joining the midpoints of opposite edges). Now truncate the tetrahedron by planes parallel to the faces so as to reduce the altitudes each to thi-ee-fourths of the original value, and from the centre of each new face round oif symmetrically up to the adjacent three circles; and within each circle scoop down to the centre of the tetrahedron, the bounding surface of the excavation passing through the three right lines, and the sections (by planes parallel to the face) being in the neighbourhood of the face nearly circular, but as they approach the centre, assuming a trigonoidal form, and being close to the centre an indefinitely small equilateral triangle. We have thus the surface, consisting of four lobes united only by the lines through the mid-points of opposite edges, these lines being consequently nodal lines; the mid-points being piuch-points of the surface, and the faces singular planes, each touching the surface along the insc
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- VerlagUNIV OF MICHIGAN PR
- Erscheinungsdatum2001
- ISBN 10 1418170232
- ISBN 13 9781418170233
- EinbandTapa dura
- Anzahl der Seiten648
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The collected mathematical papers of Arthur Cayley.Vol. 9
Verlag:
University Of Michigan Press Jan 2001, 2001
ISBN 10: 1418170232
ISBN 13: 9781418170233
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Buch. Zustand: Neu. Neuware - This scarce antiquarian book is included in our special Legacy Reprint Series. In the interest of creating a more extensive selection of rare historical book reprints, we have chosen to reproduce this title even though it may possibly have occasional imperfections such as missing and blurred pages, missing text, poor pictures, markings, dark backgrounds and other reproduction issues beyond our control. Because this work is culturally important, we have made it available as a part of our commitment to protecting, preserving and promoting the world's literature. Artikel-Nr. 9781418170233
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