diff --git a/relational/optimizations.py b/relational/optimizations.py
index 4c0c92b..9a877cf 100644
--- a/relational/optimizations.py
+++ b/relational/optimizations.py
@@ -257,7 +257,7 @@ def selection_and_product(n,rels):
     #TODO document in the wiki
     changes=0
     
-    if n.name=='σ' and n.child.name=='*':
+    if n.name=='σ' and n.child.name in ('*','ᐅᐊ','ᐅLEFTᐊ','ᐅRIGHTᐊ','ᐅFULLᐊ'):
         l_attr=n.child.left.result_format(rels)
         r_attr=n.child.right.result_format(rels)
         
@@ -354,7 +354,5 @@ def selection_and_product(n,rels):
         changes+=selection_and_product(n.left,rels)
     return changes
         
-    
-
 general_optimizations=[duplicated_select,down_to_unions_subtractions_intersections,duplicated_projection,selection_inside_projection,subsequent_renames,swap_rename_select]
 specific_optimizations=[selection_and_product]
\ No newline at end of file
diff --git a/relational/optimizer.py b/relational/optimizer.py
index 2cc6fe4..aa290e6 100644
--- a/relational/optimizer.py
+++ b/relational/optimizer.py
@@ -279,7 +279,7 @@ if __name__=="__main__":
     #n=tree("σ id==3 and indice==2 and name==5 or name<2(P1 * S1)")
     #print optimizations.selection_and_product(n,rels)
     
-    print specific_optimize("σ name==skill and age>21 and id==indice and skill=='C'(P1*S1)",rels)
+    print specific_optimize("σ name==skill and age>21 and id==indice and skill=='C'(P1ᐅᐊS1)",rels)
     
     #print n
     #print n.result_format(rels)