About 65 results
|Jessen's Orthogonal Icosahedron A SHAKY POLYHEDRON constructed by |
replacing six pairs of adjacent triangles in an ICOSAHEDRON (whose edges
form a SKEW QUADRILATERAL) with pairs of ISOSCELES TRIANGLES sharing
|Page 213 are duals of each other B. Jessen, Orthogonal Icosahedron, Nordisk |
Matematisk Tidskrift 15 (1967):9096; J. Ounsted, An Unfamiliar Dodecahedron
, Mathematics Teaching, 83 (1978):4547. B. M. Stewart, Adventures among ...
|... that is, 03 with pyramids on each face, the stella octangula is embeddable in 5//|
12; c) having an icosahedron as skeleton, Jessen's orthogonal icosahedron (
which is non-rigid) is embeddable in ^He; d) the polar collapsoid is not 5-gonal. 3
|The regular icosahedron of twenty tri- Orthogonal icosahedron (shaky |
polyhedron) angular faces is convex and rigid. ... to the original common edge to
make a non-convex icosahedron, we may obtain the orthogonal icosahedron of
Jessen , ...
|A number of interesting examples of centrally symmetric orthogonal (nonconvex) |
polyhedra can be found in Jessen's paper  ; each of them is of the same
topological type as the regular icosahedron. One of Jessen's icosahedra is
shown in ...
|B. Jessen  Orthogonal icosahedron. Nordisk Mat. Tidskr. 15(1967), 90-96. |
S. A. Robertson and S. Carter [ 1970] On the Platonic and Archimedean solids. J.
London Math. Soc. (2) 2(1970), 125-132. W. Wunderlich  Starre, kippende
|Jessen, B0rge Orthogonal icosahedra. > No mat t, vol. 15, p. 90-96 ill. + 144. |
Karst, Edgar Tables on fifth power residuacity. > BIT, vol. 7, p. 114-122. Kennedy,
E. S. The digital computer and the history of the exact sciences. > Centaurus, vol.
|Jensen, R. B. 53: Concrete models of set theory. Jerome, Joseph W. 4484 : |
Asymptotic estimates of the SC2 n- width. Jerrard, Richard. 5884 : A regular
homotopy of <S2. Jessen, Berge. 2083 : Orthogonal icosahedra. Jewell, William
S. 7013: ...
|... 227-250. MR 11-455.  Jessen, B. 1939 Om Polyedres Rumfang. ... MR 7-|
386. 1967 Orthogonal icosahedra. Nordisk Mat. ... MR 80b: 51010. Jessen, B., J.
Karpf, A. Thorup 1968 Some functional equations Valuations on convex bodies