Fixes #28

docs: fix bug in ghost resource laws

I think the current rule if buggy; the validity of a ghost resource `a` should not imply its ownership.

Please advise me if I understand incorrectly :-)  Thank you!
Jeehoon

See merge request !5

docs: fix bug in ghost resource laws

I think the current rule if buggy; the validity of a ghost resource `a` should not imply its ownership.

Please advise me if I understand incorrectly :-)  Thank you!
Jeehoon

See merge request !5

This is more consistent with the definition of the extension order, which
is also defined in terms of an existential.

It is not non-expansive, so not a function we should use.

They are redundant because frac is discrete.

fix typo

@jung good?

See merge request !2

With Coq 8.6, you can no longer have intro patterns that give more names than
the constructor has.  Also, patterns with too few names are now interpreted as
filling up with "?", rather than putting the unnamed parts into the goal again.

Furthermore, it seems the behavior of "simplify_eq/=" changed, I guess
hypotheses are considered in different order now.  I managed to work around
this, but it all seem kind of fragile.

The next compilation failure is an "Anyomaly: ... Please report", so that's what I will do.