Matti Pitkanen (matpitka@pcu.helsinki.fi)
Fri, 8 Oct 1999 20:34:03 +0300 (EET DST)
On Tue, 8 Oct 2019, Ben Goertzel wrote:
>
> >
> > Physicists look like to talk much. Mathematicians just talk about
> > what they
> > knows without making redundant comments.
> >
> > Best wishes,
> > Hitoshi
>
>
> I must observe that the use of undefined integrals has a rather esteemed
> history in physics....
>
> The Feynman integral was basically undefined mathematically when Feynman
> started using it, then many
> years later, mathematicians figured out ways to define it mathematically in
> many useful cases.
>
> This is just a general comment, I haven't been following the mathematical
> arguments of Matti & Hitoshi
> in much detail
The representation of the projection operator is not essential
for the proof of unitarity.
MP
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