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Uniform 7-polytope
In seven-dimensional geometry, a 7-polytope is a polytope contained by 6-polytope facets. Each 5-polytope ridge being shared by exactly two 6-polytope facets.
A uniform 7-polytope is one which is vertex-transitive, and constructed from uniform 6-polytope facets.
== Regular 7-polytopes ==
Regular 7-polytopes are represented by the Schläfli symbol with u 6-polytopes facets around each 4-face.
There are exactly three such convex regular 7-polytopes:
# - 7-simplex
# - 7-cube
# - 7-orthoplex
There are no nonconvex regular 7-polytopes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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