On Oct 11, 2006, at 11:14 AM, Ross Paterson wrote:

On Wed, Oct 11, 2006 at 11:04:49AM -0400, Robert Dockins wrote:
let q = seq q (FinCons 3 q) in q                    (beta)

We have (from section 6.2):
   seq _|_ y = _|_
   seq x y = y    iff x /= _|_

Now, here we have an interesting dilemma.

The meaning of a recursive definition is the least fixed point of
the equation, in this case _|_.  Same as let x = x in x.


Ah....... of course! A simple explanation; I hoped there was one. It's nice that it coincides with what I wanted the answer to be. :-)



Rob Dockins

Speak softly and drive a Sherman tank.
Laugh hard; it's a long way to the bank.
          -- TMBG



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