![]() | Triangulation Options |
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The Triangulation options panel controls how Regina works with 3-manifold triangulations.
The settings here are:
- Default top-level tab
Specifies which tab in the triangulation viewer will first appear when you open a triangulation for viewing.
- Default skeleton tab
Specifies which sub-tab will first appear when you switch to the triangulation skeleton tab.
- Default algebra tab
Specifies which sub-tab will first appear when you switch to the triangulation algebra tab.
- Surface calculation threshold
Determines when the information on the triangulation surfaces tab is computed. If the number of tetrahedra is at most the given value, then Regina will compute surface-related information automatically. If the number of tetrahedra is larger, then Regina will not compute this information until you manually press the button.
Note that 3-sphere and 3-ball recognition might use a slighly lower threshold than the one you set here. This is because they rely on almost normal surfaces, which in the worst-case scenario are much slower to work with than normal surfaces.
- Labels on face pairing graphs
If checked, Regina will label each node in the face pairing graph with the corresponding tetrahedron number.
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