Leonardo de Moura
759aa61f70
refactor(builtin/kernel): define if-then-else using Hilbert's operator
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-30 19:28:42 -08:00
Leonardo de Moura
dd6aae378f
fix(library/simplifier): must use metavar_env in is_ceq, otherwise it may ceqs that contain metavariables
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 13:29:20 -08:00
Leonardo de Moura
92ba4e8b2d
feat(library/simplifier): add support for metavariables in conditional rewrite rules
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-29 08:34:04 -08:00
Leonardo de Moura
3238c7e2a0
feat(library/simplifier): add is_permutation_ceq predicate
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 19:53:52 -08:00
Leonardo de Moura
c73398a0b8
refactor(library/simplifier): relax rule for conditional equalities
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The idea is to support conditional equations where the left-hand-side does not contain all theorem arguments, but the missing arguments can be inferred using type inference.
For example, we will be able to have the eta theorem as rewrite rule:
theorem eta {A : TypeU} {B : A → TypeU} (f : ∀ x : A, B x) : (λ x : A, f x) = f
:= funext (λ x : A, refl (f x))
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 16:06:00 -08:00
Leonardo de Moura
3daac17ea8
feat(library/simplifier): convert disequalities (a ≠ b) into equations '(a = b) = false'
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 15:30:16 -08:00
Leonardo de Moura
f67b5c4d00
test(tests/lua): more to_ceqs tests
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 13:50:35 -08:00
Leonardo de Moura
c651d3ea2d
feat(library/simplifier): filter out propositions that cannot be used as conditional equations
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-15 12:06:27 -08:00
Leonardo de Moura
c8e1ec87d2
feat(library/simplifier): add to_ceqs function that converts a theorem into a sequence of conditional equations
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2014-01-14 18:30:19 -08:00
