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118 commits

Author SHA1 Message Date
Leonardo de Moura
c04c610b7b feat(frontends/lean): add 'assert H : A, ...' as notation for 'have H [visible] : A, ...' 2015-02-25 14:30:42 -08:00
Jeremy Avigad
e513b0ead4 refactor(library,hott): rename theorems for decidable and inhabited 
The convention is this: we use e.g. nat.is_inhabited and nat.has_decidable_eq
for these two purposes only, to avoid clashing with "inhabited" and "decidable_eq"
in a namespace. Otherwise, we use "decidable_foo" and "inhabited_foo".
 2015-02-25 14:05:07 -08:00
Leonardo de Moura
3ede8e9150 refactor(library): use [] binder annotation when declaring instances 2015-02-24 16:12:39 -08:00
Leonardo de Moura
1cd44e894b feat(library/tactic/class_instance_synth): conservative class-instance resolution: expand only definitions marked as reducible 
closes #442
 2015-02-24 16:12:35 -08:00
Leonardo de Moura
a35cce38b3 feat(frontends/lean): new semantics for "protected" declarations 
closes #426
 2015-02-11 14:09:25 -08:00
Jeremy Avigad
5ef510f290 feat(library/logic/axioms/prop_complete): add by_cases, by_contradiction 2015-02-01 11:17:45 -08:00
Jeremy Avigad
003a2c1e2c refactor(library/logic/axioms): rename files, import logic.axioms.classical now imports all classical axioms 2015-02-01 11:17:45 -08:00
Jeremy Avigad
ba15da8d83 refactor(library/init/reserved_notation): increase binding strength of ^-1 to max+10 2015-01-26 20:38:21 -05:00
Leonardo de Moura
8246feff67 refactor(library/logic/eq): cleanup proof 2015-01-13 17:12:21 -08:00
Leonardo de Moura
2e4a2451e6 refactor(library/reducible): simplify reducible/irreducible semantics 2015-01-08 18:52:18 -08:00
Jeremy Avigad
6ad091d7bf refactor(library): clean up headers and markdown files 2014-12-22 15:33:42 -05:00
Jeremy Avigad
fe424add26 refactor(library/logic/axioms): rename theorems 2014-12-22 15:33:42 -05:00
Leonardo de Moura
abe129aa4f refactor(library): rename theorems "iff.flip_sign -> not_iff_not_of_iff" and "decidable_iff_equiv -> decidable_of_decidable_of_iff" 2014-12-15 19:17:51 -08:00
Leonardo de Moura
5cf8064269 refactor(library): rename exists_elim and exists_intro to exists.elim 
and exists.intro
 2014-12-15 19:07:38 -08:00
Jeremy Avigad
da719e6ee4 refactor(library/logic): rename theorems 2014-12-15 16:13:04 -05:00
Jeremy Avigad
3e9a484851 refactor(library/logic/connectives): rename theorems 2014-12-15 15:05:44 -05:00
Leonardo de Moura
7c8ab81cc6 feat(library/logic/quantifiers): add decidable_forall_eq and decidable_exists_eq theorems 2014-12-13 15:48:04 -08:00
Leonardo de Moura
477d79ae47 refactor(library/init): move more theorems to logic 2014-12-12 13:50:53 -08:00
Leonardo de Moura
d6c8e23b03 refactor(library/init/logic): move theorems to library/logic 2014-12-12 13:24:17 -08:00
Leonardo de Moura
d50b7a8ba1 refactor(library/init/logic): move theorems to logic/cast 2014-12-12 12:39:16 -08:00
Leonardo de Moura
5d4b6a3de2 chore(library/logic/logic.md): adjust documentation 2014-11-30 21:19:56 -08:00
Leonardo de Moura
697d4359e3 refactor(library): add 'init' folder 2014-11-30 20:34:12 -08:00
Leonardo de Moura
dad94eafbe refactor(data/nat/decl): use new naming convention at data/nat/decl.lean 2014-11-30 15:07:09 -08:00
Leonardo de Moura
f24eed50af refactor(library/logic/heq): minor change 2014-11-30 13:52:34 -08:00
Leonardo de Moura
d7042c4618 fix(library/logic/heq): heq.to_eq must be transparent because it is needed in the 'inversion' tactic used by definitional package 2014-11-28 23:49:17 -08:00
Jeremy Avigad
bb8d436e75 refactor(library/algebra/relation, library/logic/instances): revise equivalence relations and congruences to use structure command 2014-11-28 22:54:15 -08:00
Leonardo de Moura
faf736a9d2 feat(library/logic/default): add wf_k 2014-11-22 13:25:46 -08:00
Leonardo de Moura
a3daff702a fix(library/logic/wf): typo 2014-11-22 13:25:46 -08:00
Leonardo de Moura
47b6cfb28d feat(library/logic/if): add dependent if-then-else: dite 2014-11-22 09:56:32 -08:00
Leonardo de Moura
29a0d3109b refactor(library/logic/connectives): mark theorems used to prove 'decidable' theorems as transparent 
if we don't this, then 'if-then-else' expressions depending on theorems
such as 'and_decidable', 'or_decidable' will not compute inside the kernel
 2014-11-22 09:32:43 -08:00
Leonardo de Moura
7c54dbce10 refactor(library/logic/if): mark basic theorem transparent 2014-11-22 00:19:05 -08:00
Leonardo de Moura
acf1c501ad refactor(library/logic/prop): allow 'absurd' to generate Type 2014-11-22 00:19:05 -08:00
Leonardo de Moura
2e121182de refactor(library/logic/decidable): rename decidable_rel -> decidable_pred, and decidable_rel2 -> decidable_rel 2014-11-21 11:49:31 -08:00
Leonardo de Moura
47e3f0e770 fix(library/logic/wf_k): missing file 2014-11-21 10:03:20 -08:00
Leonardo de Moura
e77cd59368 refactor(library/logic): add basic definitions for relations at logic/relation.lean 
We need them for wf and definitional package
 2014-11-18 17:32:22 -08:00
Leonardo de Moura
bf5f48730c refactor(library/data/subtype): define subtype using 'structure' command 2014-11-16 15:01:14 -08:00
Leonardo de Moura
627c7cb531 chore(library/logic/wf): remove unnecessary :max 2014-11-14 17:37:05 -08:00
Leonardo de Moura
edd04881ee fix(library/logic): import prod and unit declarations in logic 
Reason: we need them for automatically generating constructions needed
by the definitional package
 2014-11-12 16:54:50 -08:00
Leonardo de Moura
9c93816211 chore(library/logic/wf): cleanup 2014-11-10 21:19:38 -08:00
Leonardo de Moura
4ebd3e2c27 feat(library/logic/wf): transitive closure of a well-founded relation is well-founded 2014-11-10 21:07:28 -08:00
Leonardo de Moura
22b7a0615f fix(frontends/lean): coercion affects other modules 2014-11-10 20:14:19 -08:00
Leonardo de Moura
64043094f4 feat(library/logic/wf): some basic definitions for constructing well_founded relations 2014-11-10 17:57:55 -08:00
Floris van Doorn
bf27a17dec style(library): add some comments 2014-11-08 19:12:54 -08:00
Floris van Doorn
8c7fdd3708 style(library): rename set_category to discrete_category 2014-11-08 19:12:54 -08:00
Leonardo de Moura
ad2ecfb7a8 refactor(library/logic/cast): move heq declaration to a separate module 
heq is be needed for some automatically generated constructions.
So, we want it available with the least number of dependencies.
 2014-11-08 10:19:29 -08:00
Leonardo de Moura
92b0a538c5 refactor(library/logic/wf): add well_founded class, and cleanup file 2014-11-07 10:18:24 -08:00
Leonardo de Moura
781f709bb4 feat(library/logic): import wf.lean in logic/default.lean 
We will use well-founded recursion in the definitional package
 2014-11-06 15:03:13 -08:00
Leonardo de Moura
194247f75b refactor(library/logic/wf): minimize dependencies 2014-11-06 14:59:03 -08:00
Leonardo de Moura
b177c84b06 feat(library/logic): add well-founded recursion 
It also removes the old well-founded induction theorem based on
classical principles
 2014-11-06 14:49:53 -08:00
Leonardo de Moura
d306c42a1f refactor(library/logic): cleanup some of the proofs in cast.lean, remove piext axiom 
Remark: the main motivation for piext was Lean 0.1 simplifier.
We are using a different approach in Lean 0.2.
The axiom is not needed anymore.
It is also not used in any part of the standard library
 2014-11-05 16:43:31 -08:00