 24 Nov, 2016 2 commits


Robbert authored
ProofMode intro patterns: accept _ as part of variable names @robbertkrebbers beat this. ;) See merge request !29

Ralf Jung authored

 23 Nov, 2016 12 commits


Ralf Jung authored

Ralf Jung authored

Ralf Jung authored

Robbert Krebbers authored

Ralf Jung authored
Use notation N @⊆ E to avoid ambiguity. Since `nclose : namespace → coPset` is declared as a coercion, the notation `nclose N ⊆ E` was pretty printed as `N ⊆ E`. However, `N ⊆ E` could not be typechecked because type checking goes from left to right, and as such would look for an instance `SubsetEq namespace`, which causes the right hand side to be illtyped. See merge request !24

Ralf Jung authored
Fractional typeclass. A typeclass for fractional assertions, that is assertions that depend on a fraction and that can be split. This is used to derive generically a few other instances for framing , destructing, combining and spliting assertions of sums of fractions. I found it usefull when doing fractionheavy proofs in LambdaRust. The Right Way To Do It would be to use a typeclass over the *predicate* itself. Unfortunately, the unification algorithm of typeclasses is not powerful enough to do the right betaexpansion that would expose the predicate applied to some fraction. Instead, the `Fractional` type class has as parameters both the predicate and the applied form that can be directly unified with the fractured assertion. Not very pretty. I wonder whether I should split this into two type classes: the first one would depend only on the predicate and would actually state the fractionality of it, and the second would do the betaexpansion job. What do you think? See merge request !23

JacquesHenri Jourdan authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Ralf Jung authored

 22 Nov, 2016 19 commits


Robbert Krebbers authored

Ralf Jung authored

Robbert Krebbers authored

Robbert Krebbers authored
We do this by introducing a type class UpClose with notation ↑. The reason for this change is as follows: since `nclose : namespace → coPset` is declared as a coercion, the notation `nclose N ⊆ E` was pretty printed as `N ⊆ E`. However, `N ⊆ E` could not be typechecked because type checking goes from left to right, and as such would look for an instance `SubsetEq namespace`, which causes the right hand side to be illtyped.


Ralf Jung authored

Robbert Krebbers authored

Ralf Jung authored

Ralf Jung authored

Ralf Jung authored

Robbert authored
split completion from COFEs and only require it for the solver This is the OFE part of !22 Cc @robbertkrebbers @jjourdan See merge request !26

Ralf Jung authored
Use COFEs only for the recursive domain equation solver

Ralf Jung authored


Ralf Jung authored

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored

Ralf Jung authored

 21 Nov, 2016 7 commits


Ralf Jung authored
In particular, make sure we always try eassumption before reflexivity.

Robbert Krebbers authored

Robbert Krebbers authored

Robbert Krebbers authored
The old name didn't make much sense. Also now we can have pure_False too.

Ralf Jung authored

Robbert Krebbers authored

Robbert Krebbers authored
