The New Encyclopædia Britannica: The new Encyclopædia BritannicaEncyclopædia Britannica, 1992 |
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Page 619
... isomorphic , or of the same combinatorial type , provided there exists a one- to - one correspondence between their faces , such that two faces of the first polytope meet if and only if the corre- sponding faces of the second meet . The ...
... isomorphic , or of the same combinatorial type , provided there exists a one- to - one correspondence between their faces , such that two faces of the first polytope meet if and only if the corre- sponding faces of the second meet . The ...
Page 620
... isomorphic , the corre- spondence being indicated by the letters at the vertices . To classify the convex polygons by their combinatorial types , it is sufficient to determine the number of vertices v ; for each v 3 , all polygons with ...
... isomorphic , the corre- spondence being indicated by the letters at the vertices . To classify the convex polygons by their combinatorial types , it is sufficient to determine the number of vertices v ; for each v 3 , all polygons with ...
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