lib/dydx/algebra.rb in dydx-0.0.5 vs lib/dydx/algebra.rb in dydx-0.0.6

@@ -46,9 +46,11 @@
     def inverse(x, operator)
       if operator == :+ && x.is_0?
         e0
       elsif operator == :* && x.is_1?
         e1
+      elsif x.is_a?(Inverse) && x.operator == operator
+        x.x
       else
         Inverse.new(x, operator)
       end
     end
   end