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D.13.2.44 emptyFan
Procedure from library gfan.lib (see gfan_lib).
- Usage:
- emptyFan(n); n int
- Return:
- fan, an empty fan in ambient dimension n
Example:
| | LIB "gfan.lib";
fan f=emptyFan(2);
f;
==> _application PolyhedralFan
==> _version 2.2
==> _type PolyhedralFan
==>
==> AMBIENT_DIM
==> 2
==>
==> DIM
==> -1
==>
==> LINEALITY_DIM
==> 2
==>
==> RAYS
==>
==> N_RAYS
==> 0
==>
==> LINEALITY_SPACE
==> 1 0 # 0
==> 0 1 # 1
==>
==> ORTH_LINEALITY_SPACE
==>
==> F_VECTOR
==>
==>
==> SIMPLICIAL
==> 1
==>
==> PURE
==> 1
==>
==> CONES
==>
==> MAXIMAL_CONES
==>
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