À propos des polytopes calculés dans pst-coxeterp

Jean-Gabriel et ManuelLUQUE*

September 15, 2003

*Jean-Gabriel.Luque@univ-mlv.fr

1 Les polytopes 2{p}2 (avec p entier)

Ce sont simplement les polygones réels classiques, en voici un échantillon.

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|        2        |                3                 |                4                |
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|-----------------|----------------------------------|---------------------------------|
|--------5--------|----------------6-----------------|----------------7----------------|
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|--------8--------|----------------9-----------------|---------------10----------------|
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----------------------------------------------------------------------------------------

2 Les polytopes complexes 2{3}2...2{3}2

Ce sont les simplexes, tous les sommets sont équivalents. Leurs groupes de réflections sont simplement les groupes symétriques.

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|        3        |                4                 |                5                |
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|-----------------|----------------------------------|---------------------------------|
|--------6--------|----------------7-----------------|----------------8----------------|
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|--------9--------|----------------10----------------|---------------11----------------|
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----------------------------------------------------------------------------------------

3 Les polygones p{4}2

Ce sont des polygones dont les sommets sont complexes. Ils sont notés par Coxeter par g2p

|-----------3-----------|----------4------------|----------5-----------|
|-----------------------|-----------------------|----------------------|
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|-----------------------|-----------------------|----------------------|
|-----------6-----------|----------7------------|----------8-----------|
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|-----------------------|-----------------------|----------------------|
|-----------9-----------|----------10-----------|---------11-----------|
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-----------------------------------------------------------------------|

4 Les polygones 2{4}p

Ce sont des polygones dont les sommets sont complexes réciproques des précédents. Ils sont notés par Coxeter par b2p.

|-----------3-----------|----------4------------|----------5-----------|
|-----------------------|-----------------------|----------------------|
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|-----------------------|-----------------------|----------------------|
|-----------6-----------|----------7------------|----------8-----------|
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|-----------------------|-----------------------|----------------------|
|-----------9-----------|----------10-----------|---------11-----------|
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-----------------------------------------------------------------------|

5 Les polyèdres p{4}2{3}2

Ce sont des polyèdres dont les sommets sont complexes. Ils sont notés par Coxeter par g3p.

|-----------3-----------|----------4------------|----------5-----------|
|-----------------------|-----------------------|----------------------|
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|-----------------------|-----------------------|----------------------|
|-----------6-----------|----------7------------|----------8-----------|
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|-----------------------|-----------------------|----------------------|
|-----------9-----------|----------10-----------|---------11-----------|
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-----------------------------------------------------------------------|

6 Les polyèdres 2{3}2{4}p

Ce sont des polyèdres dont les sommets sont complexes réciproques des précédents. Ils sont notés par Coxeter par b3p.

|-----------3-----------|----------4------------|----------5-----------|
|-----------------------|-----------------------|----------------------|
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|-----------------------|-----------------------|----------------------|
|-----------6-----------|----------7------------|----------8-----------|
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|-----------------------|-----------------------|----------------------|
|-----------9-----------|----------10-----------|---------11-----------|
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-----------------------------------------------------------------------|

References

[1]   H. S. M. Coxeter, Regular Complex Polytopes, Second Edition, Cambridge University Press, 1991 .