1 | initial version |

This is completely the correct answer! How frustrating for me! When I try to run the example (on my Mac Pro with Sage 5.4.1 and OS X 10.8.2)

sage: X = simplicial_complexes.Simplex(2)

sage: find_dual_cell(X, Simplex(X.vertices()[0]))

I get the error

sage: Traceback (click to the left of this block for traceback)...

sage: ValueError: The face ((0,), (0, 2), (0, 1, 2)) is not a subset of the vertex set.

I have created a worksheet at http://www.sagenb.org/home/pub/5038 that contains all of the above code. It still produces the same error!

2 | No.2 Revision |

This is completely the correct answer! How frustrating for me! When I try to run the example (on my Mac Pro with Sage 5.4.1 and OS X 10.8.2)

sage: X = simplicial_complexes.Simplex(2)

sage: find_dual_cell(X, Simplex(X.vertices()[0]))

I get the error

sage: Traceback (click to the left of this block for traceback)...

sage: ValueError: The face ((0,), (0, 2), (0, 1, 2)) is not a subset of the vertex set.

I have created a worksheet at http://www.sagenb.org/home/pub/5038 that contains all of the above ~~code. ~~code (edit: public worksheets are currently disabled) . It still produces the same error!

3 | No.3 Revision |

This is completely the correct answer! How frustrating for me! When I try to run the example (on my ~~Mac ~~Macbook Pro with Sage 5.4.1 and OS X 10.8.2)

sage: X = simplicial_complexes.Simplex(2)

sage: find_dual_cell(X, Simplex(X.vertices()[0]))

I get the error

sage: Traceback (click to the left of this block for traceback)...

sage: ValueError: The face ((0,), (0, 2), (0, 1, 2)) is not a subset of the vertex set.

I have created a worksheet at http://www.sagenb.org/home/pub/5038 that contains all of the above code (edit: public worksheets are currently disabled) . It still produces the same error!

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