 About 65 results  books.google.com 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
a ... 

 books.google.com 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 ... 

 books.google.com ... I. and Sabitov I.Kh.: Bending of surfaces. I: Problems of Geometry (Itogi Nauki i
Tekh. 23) VINITI, Moscow 1991, pp. 131 184 (Russian); Bending of surfaces. II:
J. Math. Sci. 74 (1995), No. 3, 9971043 Jessen B.: Orthogonal icosahedra. 

 books.google.com ... 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 nonrigid) is embeddable in ^He; d) the polar collapsoid is not 5gonal. 3
. 

 books.google.com The regular icosahedron of twenty tri Orthogonal icosahedron (shaky
polyhedron) angular faces is convex and rigid. ... to the original common edge to
make a nonconvex icosahedron, we may obtain the orthogonal icosahedron of
Jessen [3], ... 

 books.google.com A number of interesting examples of centrally symmetric orthogonal (nonconvex)
polyhedra can be found in Jessen's paper [35] ; each of them is of the same
topological type as the regular icosahedron. One of Jessen's icosahedra is
shown in ... 

 books.google.com B. Jessen [1967] Orthogonal icosahedron. Nordisk Mat. Tidskr. 15(1967), 9096.
S. A. Robertson and S. Carter [ 1970] On the Platonic and Archimedean solids. J.
London Math. Soc. (2) 2(1970), 125132. W. Wunderlich [1965] Starre, kippende
... 

 books.google.com Jessen, B0rge Orthogonal icosahedra. > No mat t, vol. 15, p. 9096 ill. + 144.
Karst, Edgar Tables on fifth power residuacity. > BIT, vol. 7, p. 114122. Kennedy,
E. S. The digital computer and the history of the exact sciences. > Centaurus, vol. 

 books.google.com 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: ... 

 books.google.com ... 227250. MR 11455. [13] 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
241. 

 