+<pre>
+ ((M γ) -v- (unit G))[C1], by (5) =
+ M(γ*) ∘ unit[G(C1)], which by (4), with f=γ*: G(C1)→MG'(C1) is:
+ unit[MG'(C1)] ∘ γ*, which by (6) =
+ ((unit MG') -v- γ)[C1]
+</pre>
+
+So our **(lemma 2)** is:
+
+<pre>
+ (((M γ) -v- (unit G)) = ((unit MG') -v- γ)), where γ is a transformation from G to MG'.
+</pre>