diff --git a/src/sage/categories/coxeter_groups.py b/src/sage/categories/coxeter_groups.py index f480095041a..6660829d005 100644 --- a/src/sage/categories/coxeter_groups.py +++ b/src/sage/categories/coxeter_groups.py @@ -22,7 +22,6 @@ from sage.categories.generalized_coxeter_groups import GeneralizedCoxeterGroups from sage.structure.element import have_same_parent, parent from sage.misc.flatten import flatten -from sage.rings.integer_ring import ZZ from copy import copy from collections import deque @@ -2912,6 +2911,7 @@ def kazhdan_lusztig_cell(self, side='left'): """ from sage.algebras.iwahori_hecke_algebra import IwahoriHeckeAlgebra from sage.rings.polynomial.laurent_polynomial_ring import LaurentPolynomialRing + from sage.rings.integer_ring import ZZ R = LaurentPolynomialRing(ZZ, 'v') v = R.gen(0)