 | spantaut |
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Name
spantaut — Does an angle structure list span a taut structure?
Synopsis
| Content Model | |
spantaut ::= | |
| Attributes | |
| Name | Type |
value | CDATA (required) |
Added in Regina 4.90
Description
A spantaut element stores whether or not any
angle structure in the parent list is a taut angle structure.
Because taut structures always appear as vertices of the angle
structure solution space, this is equivalent to knowing whether any
convex combination of the angle structures in the parent
list is a taut angle structure.
A taut angle structure contains only angles 0 and π.
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