f(inc_((A |^| B) |_| A’)) + g inc_(A |^| B’)
|
|         &lt;by (25)&gt;
|
|      =  f inc_(A |^| B’)’ + g inc_(A |^| B’)
|
|      =  if A |^| B’ then g else f.
|
| Manes &amp; Arbib, AAPS, pages 33-34.
|
| Ernest G. Manes &amp; Michael A. Arbib,
|'Algebraic Approaches to Program Semantics',
| Springer-Verlag, New York, NY, 1986.

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</PRE>

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