Created
February 12, 2020 07:27
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Generates the vertices of a unit hexacosichoron
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import itertools | |
from sympy.combinatorics import Permutation | |
def get_hexacosichoron_vertices(): | |
phi = (1 + 5 ** .5) / 2 | |
U = [.5 * phi, .5, .5 / phi] | |
permutation_list = [P for P in itertools.permutations(range(4)) if Permutation(P).is_even] | |
for i in range(16): | |
yield [.5 if i & 2 ** j == 0 else -.5 for j in range(4)] | |
for i in range(4): | |
for x in [-1, 1]: | |
yield [x if i == j else 0 for j in range(4)] | |
for i in range(8): | |
A = [0] + [U[j] if i & 2 ** j == 0 else -U[j] for j in range(3)] | |
for P in permutation_list: | |
yield [A[j] for j in P] |
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