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D.14.1.43 arrBoundedChambers
Procedure from library
arr.lib
(see
arr_lib
).
Usage:
arrBoundedChambers(A); arr A
Return:
[int] The number of bounded chambers of an arrangement, which is equal to the evaluation of the Poincare polynomial at -1.
Example:
LIB "arr.lib"; ring R = 0,(x,y),dp; arr A = ideal(x,y,x+y-1); arrBoundedChambers(A); ==> 1
See also:
arrBoundedChambers
;
arrChambers
;
arrPoincare
.
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