Singular Manual: emptyFan

| #### 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
    ==>

User manual for Singular version 4.4.1, 2025, generated by texi2html.