[Iris-Club] pre-wp's definition: s, s1, and s2

[Jeehoon Kang]

I think I almost understand `pre-wp` ;-)  But I still cannot understand the
use of step-index: may I ask what is the intuition behind requiring `m+1
\in ...` for the value case?  I think I understand why you required `m in
...` in the reduction case, since there is actually a step.  But for the
value case, I am not sure why it is necessary to demand `m+1 \in ...`.  Why
`m \in ...` is not enough?

Thank you,
Jeehoon

2016-08-19 21:14 GMT+09:00 Ralf Jung <jung at mpi-sws.org>:

> Hi,
>
> > But I am still confused of the definition of `pre-wp`..  In the 2nd
> > line, `s` should have the type ∆(Val), mandated by `ϕ(s)`; and yet at
> > the same time `s` should have the type Res, from `s · rf`.  May I ask if
> > what am I missing here?
>
> Right, that should have been ϕ(v)(s). Then things hopefully make sense...
>
> Kind regards,
> Ralf
>
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-- 
Jeehoon Kang (Ph.D. student) <http://sf.snu.ac.kr/jeehoon.kang>
Software Foundations Laboratory <http://sf.snu.ac.kr>
Seoul National University <http://www.snu.ac.kr>
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