From 6f8fcaa92d8018525b3e62d2f91690028e82b232 Mon Sep 17 00:00:00 2001
From: Anne Schilling <anne@math.ucdavis.edu>
Date: Mon, 29 Aug 2016 22:29:36 -0700
Subject: [PATCH] fix for base ring in monomial bases in LLT class

---
 src/sage/combinat/sf/llt.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/sage/combinat/sf/llt.py b/src/sage/combinat/sf/llt.py
index e4919395340..e3c52459519 100644
--- a/src/sage/combinat/sf/llt.py
+++ b/src/sage/combinat/sf/llt.py
@@ -117,6 +117,13 @@ def __init__(self, Sym, k, t='t'):
             True
             sage: L3p != SymmetricFunctions(QQ).llt(3,t=1)
             True
+
+            sage: Sym = SymmetricFunctions(QQ['t'])
+            sage: ks3 = Sym.kschur(3)
+            sage: llt3 = Sym.llt(3)
+            sage: f = llt3.cospin([[1],[2,1],[1,1]]).omega()
+            sage: ks3(f)
+            ks3[2, 2, 1, 1] + ks3[2, 2, 2] + t*ks3[3, 1, 1, 1] + t^2*ks3[3, 2, 1]
         """
         self._k = k
         self._sym = Sym
@@ -126,7 +133,7 @@ def __init__(self, Sym, k, t='t'):
         if str(t) !='t':
             self._name_suffix += " with t=%s"%self.t
         self._name += self._name_suffix+" over %s"%self._sym.base_ring()
-        self._m = sage.combinat.sf.sf.SymmetricFunctions(QQt).monomial()
+        self._m = Sym.monomial()
 
     def __repr__(self):
         r"""