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compact (filter) — A constraint on compactness
Content Model | |
compact ::= | |
Attributes | |
Name | Type |
value | CDATA (required) |
A compact
(filter) element represents a constraint on the
compactness of a normal surface. A compact surface is one containing
finitely many normal discs.
The following elements contain compact
(in the
context of a constraint on surface properties):
filter
(properties).
value
Contains the specific constraint upon the compactness of a surface. The following values are allowed.
TF
signifies that the surface may be either
compact or non-compact, i.e., no constraint is imposed.
T-
signifies that the surface must be
compact.
-F
signifies that the surface must be
non-compact.
--
signifies that the surface must be neither
compact nor non-compact, i.e., no surfaces are accepted.
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