Acronym | repip (alt. ampip) |
Name |
rectified/ambified pip, o2o5o symmetric co relative |
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Circumradius | sqrt[1+1/sqrt(5)] = 1.203002 |
Face vector | 15, 30, 17 |
Confer |
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External links |
Rectification wrt. a non-regular polytope is meant to be the singular instance of truncations on all vertices at such a depth that the hyperplane intersections on the former edges will coincide (provided such a choice exists). Within the specific case of pip as a pre-image these intersection points might differ on its 2 edge types. Therefore pip cannot be rectified (within this stronger sense). Nonetheless the Conway operator of ambification (chosing the former edge centers generally) clearly is applicable. This would result in 2 different edge sizes in the outcome polyhedron. That one here is scaled such so that the smaller one becomes unity. Then the longer edge will have size c = f/q.
All q = sqrt(2) edges, provided in the below description, only qualify as pseudo edges wrt. the full polyhedron.
Incidence matrix according to Dynkin symbol
oqo5coc&#xt → both heights = 1/sqrt(2) = 0.707107, c = f/q = (1+sqrt(5))/sqrt(8) = 1.144123 o..5o.. & | 10 * | 2 2 | 1 2 1 .o.5.o. | * 5 | 0 4 | 0 2 2 --------------+------+-------+------- ... c.. & | 2 0 | 10 * | 1 1 0 oo.5oo.&#x & | 1 1 | * 20 | 0 1 1 --------------+------+-------+------- o..5c.. & | 5 0 | 5 0 | 2 * * ... co.&#x & | 2 1 | 1 2 | * 10 * oqo ...&#xt | 2 2 | 0 4 | * * 5
oq qo5oc&#zx → height = 0, c = f/q = (1+sqrt(5))/sqrt(8) = 1.144123 (tegum sum of q-{5} and gyrated (q,c)-pip) o. o.5o. | 5 * | 4 0 | 2 2 0 .o .o5.o | * 10 | 2 2 | 1 2 1 -------------+------+-------+------- oo oo5oo&#x | 1 1 | 20 * | 1 1 0 .. .. .c | 0 2 | * 10 | 0 1 1 -------------+------+-------+------- oq qo ..&#zx | 2 2 | 4 0 | 5 * * .. .. oc&#x | 1 2 | 2 1 | * 10 * .. .o5.c | 0 5 | 0 5 | * * 2
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