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Author SHA1 Message Date
Leonardo de Moura
63eb155c7e feat(library/tactic): add 'injection' tactic 
see issue #500
 2015-05-01 12:45:21 -07:00
Leonardo de Moura
1e18a76bdb chore(library/init/nat): replace 'no_confusion' with 'by contradiction' 2015-04-30 21:26:52 -07:00
Leonardo de Moura
2d9c950144 feat(library/tactic/constructor_tactic): allow 'constructor' tactic without index 
see issue #500
 2015-04-30 21:15:07 -07:00
Leonardo de Moura
d152f38518 feat(library/tactic): add 'constructor', 'split', 'left', 'right' and 'existsi' tactics 
see issue #500
 2015-04-30 17:52:29 -07:00
Leonardo de Moura
1c6067bac2 feat(library/tactic): add 'exfalso' tactic 
see issue #500
 2015-04-30 15:43:07 -07:00
Leonardo de Moura
59b11c815c refactor(library/data/list/perm): remove unnessary lambda abstractions 
The contradiction tactic takes care of it.
 2015-04-30 14:02:19 -07:00
Leonardo de Moura
9760968b45 refactor(library,hott): use/test new 'contradiction' tactic in the standard and hott libraries 2015-04-30 13:56:12 -07:00
Leonardo de Moura
9c8a63caec feat(library/tactic): add 'contradiction' tactic 
see issue #500

Remark: this tactic also applies no_confusion to take care of a contradiction
 2015-04-30 13:47:40 -07:00
Leonardo de Moura
3233008039 feat(library/tactic): allow user to name generalized term in the 'generalize' tactic 
closes #421
 2015-04-30 11:57:40 -07:00
Leonardo de Moura
3912bc24c8 feat(frontends/lean): nicer syntax for 'intros' 'reverts' and 'clears' 2015-04-30 11:00:39 -07:00
Leonardo de Moura
f60dc8ae8f refactor(library/init/nat): cleanup 2015-04-30 10:10:13 -07:00
Leonardo de Moura
018f768555 chore(library): remove some unnecessary parentheses 2015-04-29 14:39:59 -07:00
Leonardo de Moura
d2c7b5c319 feat(library/tactic): add 'let' tactic 
closes #555
 2015-04-28 17:24:43 -07:00
Leonardo de Moura
a23118d357 feat(frontends/lean): add tactic_notation command 
This addresses the first part of issue #461

We still need support for tactic definitions
 2015-04-27 17:46:13 -07:00
Leonardo de Moura
ca8943f45b feat(library,hott): remove rapply tactic 2015-04-27 15:06:16 -07:00
Leonardo de Moura
17c07cdb02 feat(library/data/rat/order): define abs and sign for rat before migrate 2015-04-27 12:59:02 -07:00
Jeremy Avigad
7a1064b7e8 refactor(library/algebra/order.lean): rename a field in an order structure 2015-04-27 12:03:41 -07:00
Jeremy Avigad
d8e40d90d6 feat(library/data/rat/order.lean): make rat a linear ordered field 2015-04-27 12:03:41 -07:00
Leonardo de Moura
76c773ad3d feat(library/data/examples/depchoice): add dependent choice example 2015-04-26 12:56:23 -07:00
Leonardo de Moura
072bf0b3b4 refactor(library): make sure "choose" compute inside the kernel 2015-04-25 23:10:48 -07:00
Leonardo de Moura
d455bb4c5b feat(library/data/fintype): add decidable_exists_finite 2015-04-25 21:38:03 -07:00
Leonardo de Moura
6bb6644c25 feat(library/data/squash): define squash type using quotients 2015-04-24 18:11:25 -07:00
Leonardo de Moura
9d01868361 feat(frontends/lean): use rewrite tactic to implement unfold (it has a unfold step) 
closes #502
 2015-04-24 17:23:12 -07:00
Leonardo de Moura
1149ead14c chore(library/logic/examples/colog88): remove unnecessary annotation 2015-04-24 12:45:06 -07:00
Leonardo de Moura
a5306e70eb feat(library/logic/examples/negative): add example showing that allowing negative inductive datatypes would lead to inconsistency 2015-04-24 09:33:09 -07:00
Leonardo de Moura
15c331591e feat(library/logic/examples/colog88): add example from COLOG-88 paper 2015-04-24 09:33:09 -07:00
Leonardo de Moura
2613e7c444 fix(frontends/lean): bug when handling identifiers in tactics 
This bug was reported by Jeremy in the Lean Google group:
https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/lean-discuss/ZKJ8WPPEVJA/n05x6rPRzvMJ
 2015-04-22 16:03:22 -07:00
Floris van Doorn
9d805437f0 fix(reserved_notation): lower binding power of 'iff' 2015-04-22 13:06:11 -07:00
Leonardo de Moura
670eac9d50 refactor(library): avoid 'context' command in the standard library 2015-04-21 19:13:19 -07:00
Leonardo de Moura
bf8a7eb9b4 fix(library/scoped_ext): bug in local metadata in sections 
The problem is described in issue #554
 2015-04-21 18:56:28 -07:00
Leonardo de Moura
6f6d106a10 feat(library/tactic): add "check_expr" tactic 
closes #486
 2015-04-19 19:00:05 -07:00
Leonardo de Moura
306087b5d3 refactor(library/data): rename 'countable' to 'encodable', define countable in the usual way, and prove all 'encodable' type is 'countable' 2015-04-19 14:20:47 -07:00
Jeremy Avigad
f4398115b4 feat(library/data/rat/basic.lean): begin theory of rationals, show rat is a field 2015-04-18 11:39:52 -07:00
Jeremy Avigad
6359132b67 refactor(library/algebra/field.lean): rename has_decidable_eq and declare instance 2015-04-18 11:39:52 -07:00
Jeremy Avigad
dfaeb475cc feat(library/init/reserved_notation.lean): add equiv relation symbol 2015-04-18 11:39:52 -07:00
Jeremy Avigad
5eb7fef564 feat(library/algebra/order.lean, data/int/{basic,order}.lean): add theorem, correct gt_trans 2015-04-18 11:39:52 -07:00
Jeremy Avigad
53919699bc refactor(library/logic/axioms/prop_decidable.lean): simplify proof of prop_decidable (using arbitrary instead of epsilon) 2015-04-18 11:39:52 -07:00
Leonardo de Moura
cc63a40a01 feat(library): enforce name conventions on old nat declarations 2015-04-18 10:50:30 -07:00
Leonardo de Moura
10954a073c feat(library/logic/examples): add new example from Martín Escardó paper 2015-04-17 15:22:52 -07:00
Leonardo de Moura
9cb759e0a9 feat(library/logic/axioms/examples/leftinv_of_inj): add classical example 2015-04-16 22:39:51 -07:00
Leonardo de Moura
3b84a63874 fix(library/algebra/function): terminology 2015-04-16 20:52:18 -07:00
Leonardo de Moura
2e675c1bdd feat(library/data/examples/notcountable): add example showing that nat -> nat is not countable 2015-04-16 14:54:34 -07:00
Leonardo de Moura
df8ebeeefc feat(library/logic/axioms/examples/diaconescu): remove redundant hypothesis 2015-04-16 14:04:09 -07:00
Leonardo de Moura
7529ee0a5c feat(library/data/countable): prove axiom of choice and skolem theorem for countable types and decidable relations 2015-04-16 12:36:27 -07:00
Leonardo de Moura
0dd7667836 feat(library/data/countable): choice function for countable types 2015-04-16 12:29:06 -07:00
Leonardo de Moura
7a4f43d6ab feat(library/data/nat/choose): choice function for natural numbers 2015-04-16 11:33:26 -07:00
Leonardo de Moura
b14d3dbeba chore(library/data/countable): add copyright notice 2015-04-16 09:24:53 -07:00
Leonardo de Moura
036900280d feat(library/data/countable): show that a type is countable by providing an injection to a type already known to be countable 2015-04-15 10:30:24 -07:00
Leonardo de Moura
039f1de524 fix(library/data/countable): typos 2015-04-14 21:26:56 -07:00
Leonardo de Moura
9534cfe92f feat(library/data/countable): prove that (list A) is countable if A is countable 2015-04-14 21:17:18 -07:00
Leonardo de Moura
a7db8a2bac theorem(library/data/countable): prove that the product of two countable types is countable 2015-04-14 20:39:58 -07:00
Leonardo de Moura
38b880b939 feat(library/data/nat/pairing): add unpair_mkpair theorem 2015-04-14 20:28:20 -07:00
Leonardo de Moura
f7a43c7997 feat(library/data/nat/sqrt): generalize sqrt_eq theorem 2015-04-14 20:10:18 -07:00
Leonardo de Moura
faca0acd26 feat(library/data/nat/sqrt): add sqrt_eq theorem 2015-04-14 15:38:54 -07:00
Leonardo de Moura
11dbcda9d2 feat(library/data/nat/pairing): add "elegant" pairing/unpairing function 2015-04-14 09:01:15 -07:00
Leonardo de Moura
2eb7538c96 fix(library/data/nat/sqrt): adjust to reflect recent changes 2015-04-14 09:01:15 -07:00
Leonardo de Moura
4180b80df6 feat(library/data/nat/power): define power and add basic theorems 2015-04-14 09:01:15 -07:00
Leonardo de Moura
ff72a520ff feat(library/data/nat/div): add mul_cancel theorems 2015-04-14 09:01:15 -07:00
Leonardo de Moura
c73c1dbb63 feat(library/data/nat/sub): add two extra theorems 2015-04-14 09:01:15 -07:00
Leonardo de Moura
11c9bb4626 feat(library/data/nat): naive square root function 2015-04-14 09:01:15 -07:00
Leonardo de Moura
2453a6ab45 feat(library/data/countable): define countable type class 2015-04-14 09:01:15 -07:00
Leonardo de Moura
a24d4e47cd feat(library/init/nat): add missing decidable_ge and decidable_lt 2015-04-14 09:01:15 -07:00
Leonardo de Moura
82eada7d56 feat(library/data/list/basic): add find nth theorem 2015-04-14 09:01:15 -07:00
Leonardo de Moura
07e195e9f1 feat(library/data/fintype): add decidable_finite_pred instance 2015-04-12 20:07:04 -07:00
Leonardo de Moura
00d68cadc8 refactor(library/data/fintype): cleanup and mark location that exposes bug in the 'cases' tactic 2015-04-12 17:52:41 -07:00
Leonardo de Moura
f523d3a995 feat(library/data): add structure for converting a list of elements into a type, and then show the resultant type is a finite type 2015-04-12 17:33:58 -07:00
Leonardo de Moura
d9f8b0f3d7 feat(library/data/finset/comb): add cross_product to finset 2015-04-11 19:46:04 -07:00
Leonardo de Moura
4c827293a8 feat(library/data/list/perm): add perm_cross_product theorem 2015-04-11 19:13:34 -07:00
Leonardo de Moura
41ddc97e0d feat(library/data/list): define filter function for lists 2015-04-11 18:22:22 -07:00
Leonardo de Moura
c437fbe0bc feat(library/data/fintype): prove that A->B has decidable equality when A is a finite type and B has decidable equality 2015-04-11 16:45:27 -07:00
Leonardo de Moura
3df7fe120c feat(library/algebra/function): define curry and uncurry functions 2015-04-11 16:45:07 -07:00
Leonardo de Moura
3edf0dffdf feat(library/data/finset): define subset for finsets 2015-04-11 15:29:12 -07:00
Leonardo de Moura
dfef4c5daf feat(library/data): define fintype type class 2015-04-11 14:55:41 -07:00
Leonardo de Moura
06d4ae971d feat(library/data/list): add nodup_cross_product theorem 2015-04-11 14:31:01 -07:00
Leonardo de Moura
54a2d9750e refactor(library/data): simplify definition of disjoint 2015-04-11 14:04:09 -07:00
Leonardo de Moura
ee895e00dd feat(library/data/list): define cross_product for lists 2015-04-11 13:52:50 -07:00
Leonardo de Moura
fefddcd0f9 fix(library/data/list/perm): broken theorem 2015-04-11 09:42:24 -07:00
Leonardo de Moura
1b34f40f36 feat(library/data/list/set): add decidable_nodup 2015-04-11 09:39:26 -07:00
Leonardo de Moura
dff05557a3 feat(library/data/finset): add all combinator theorems 2015-04-11 09:28:27 -07:00
Leonardo de Moura
5304c5afb8 feat(library/data/list/set): add 'all' theorems 2015-04-11 09:28:05 -07:00
Leonardo de Moura
32b07c4561 feat(library/data/finset): define map for finset 2015-04-10 17:14:10 -07:00
Leonardo de Moura
a24c0bf1db feat(library/data/finset): define intersection for finsets 2015-04-10 16:45:25 -07:00
Leonardo de Moura
49d6d43926 feat(library/data/list): define intersection for lists 2015-04-10 16:31:44 -07:00
Leonardo de Moura
d59c671054 feat(library/data/list/comb): define upto list generator 2015-04-10 15:32:44 -07:00
Leonardo de Moura
9d8b5aa347 feat(library/data/list/comb): add any/all theorems 2015-04-10 07:01:14 -07:00
Floris van Doorn
d1b98b6919 fix(reserved_notation): make is_typeof an abbreviation 2015-04-10 06:35:15 -07:00
Leonardo de Moura
5caa983919 feat(library/data/finset): redefine bigop for finset 2015-04-10 06:13:32 -07:00
Leonardo de Moura
53f730ec82 feat(library/data/list/bigop): add bigop perm theorem 2015-04-10 06:01:23 -07:00
Leonardo de Moura
608e2838bf feat(library/data/list): define bigop for lists 2015-04-10 05:52:19 -07:00
Leonardo de Moura
4be8741a39 feat(library/data/list): break list/basic.lean into smaller files 2015-04-10 05:19:52 -07:00
Leonardo de Moura
a223b9b1f7 feat(library/data/finset): add bigop for finset + commutative groups 2015-04-09 20:00:00 -07:00
Leonardo de Moura
795acc70a6 refactor(library/data/finset): move finset to its own directory 2015-04-09 19:30:09 -07:00
Leonardo de Moura
ca377e5f8b feat(library/data/list/basic): add foldr/foldl theorems 2015-04-09 18:48:04 -07:00
Leonardo de Moura
b209f442f7 refactor(library/data/list) fix theorem name, and do not rely on implementation of mem 2015-04-09 16:27:48 -07:00
Leonardo de Moura
2ab2f7dc9d feat(library/data/finset): add basic support for finite sets 2015-04-09 15:51:23 -07:00
Leonardo de Moura
571ff76080 feat(library/data/list/perm): add perm_ext theorem 2015-04-09 15:27:32 -07:00
Leonardo de Moura
64173ddf93 feat(library/data/list/basic): more nodup theorems 2015-04-09 14:50:00 -07:00
Leonardo de Moura
b4611ba33d feat(library/data/list/basic): add mem erase theorems 2015-04-09 13:19:51 -07:00
Leonardo de Moura
5ba5e66665 feat(library/algebra/binary): add auxiliary theorems 2015-04-09 11:00:59 -07:00
Leonardo de Moura
d5176ebae5 refactor(library/algebra/binary): define right_commutative and left_commutative 2015-04-09 10:54:28 -07:00
Leonardo de Moura
8522fbec4b feat(library/data/list): more general theorems for perm foldl and foldr, and other minor improvements 2015-04-09 09:29:58 -07:00
Leonardo de Moura
07ff0900aa feat(library/data/list): add permutation theorems for union and insert 2015-04-08 19:02:35 -07:00
Leonardo de Moura
33422a387a feat(library/data/list/basic): define 'union' and 'insert' for lists 2015-04-08 18:12:51 -07:00
Leonardo de Moura
c95bd8ba61 feat(library/data/list): add erase_dup and theorems 2015-04-08 12:28:48 -07:00
Leonardo de Moura
05bd6b5fe7 feat(library/data/list): add foldr/foldl equality theorems for permutations 2015-04-08 10:36:05 -07:00
Jeremy Avigad
eb5089bf27 feat(library/data/set): add theory of functions and maps between sets 2015-04-08 09:46:34 -07:00
Jeremy Avigad
1f4ddd7a0f refactor(library/init/funext.lean): break out definition of equivalence, and hide auxiliary theorems 2015-04-08 09:46:34 -07:00
Jeremy Avigad
5812b35d93 feat(library/data/set/function.lean): begin theory of functions on sets 2015-04-08 09:46:34 -07:00
Leonardo de Moura
afc75f141c refactor(library/data/list/perm): prove auxiliary theorems using 'match-with' 2015-04-08 09:43:17 -07:00
Leonardo de Moura
56d20852aa refactor(library/data/list/perm): remove dead code 2015-04-08 09:32:28 -07:00
Leonardo de Moura
ef1b057b63 refactor(library/data/list/perm): cleanup theorem 2015-04-08 09:29:40 -07:00
Leonardo de Moura
e0e65705db feat(library/data/list/perm): add perm inversion theorems 2015-04-07 18:54:02 -07:00
Leonardo de Moura
c6a35e718d refactor(library/data/list/perm): use by_cases instead of dependent-if 2015-04-07 09:26:24 -07:00
Leonardo de Moura
9306830d8c feat(library/data/list): perm is decidable 2015-04-07 09:12:10 -07:00
Leonardo de Moura
1d87016f03 refactor(library): move some theorems to init 2015-04-07 07:46:11 -07:00
Leonardo de Moura
2bc13f6bfd feat(library/tactic/exact): enforce goal type during elaboration when executing 'exact' tactic 
Remark: this was the behavior of the 'sexact' tactic.

This commit also adds the 'rexact' (relaxed exact) tactic which does not
enforce the goal type.

closes #495
 2015-04-06 13:23:38 -07:00
Leonardo de Moura
754276a660 feat(frontends/lean): round parenthesis for [tactic1 | tactic2] 
This commit also replaces the notation for divides
     `(` a `|` b `)`
with
      a `∣` b

The character `∣` is entered by typing \|

closes #516
 2015-04-06 09:24:09 -07:00
Leonardo de Moura
3b959c9e6c refactor(library/data): move perm to list folder 2015-04-05 12:01:32 -07:00
Jeremy Avigad
c563548980 feat(library/data/set/basic.lean): add definitions and simplify proofs 2015-04-05 12:36:54 -04:00
Jeremy Avigad
e76e445ece feat(library/logic/connectives.lean): add calculation rules for true and false, and move exists unique to quantifiers 2015-04-05 12:15:21 -04:00
Jeremy Avigad
c6c50a61b3 refactor(library/data/set/basic.lean): take advantage of extensionality in sets 2015-04-05 10:12:27 -04:00
Jeremy Avigad
74ff43a543 refactor(library/init/{funext,quot}.lean): adjust comments and headers 2015-04-05 10:11:53 -04:00
Jeremy Avigad
6596217a84 refactor(library/data/set): expand set.lean to set directory 2015-04-05 09:27:15 -04:00
Leonardo de Moura
4ec0e1b07c feat(frontends/lean): improve calc mode 
Now, it automatically supports transitivity of the form
    (R a b) -> (b = c) -> R a c
    (a = b) -> (R b c) -> R a c

closes #507
 2015-04-04 08:58:35 -07:00
Leonardo de Moura
f1b7021ed0 feat(library/data/list/basic): add more theorems for disjoint predicate 2015-04-03 22:55:16 -07:00
Leonardo de Moura
23a1f5fa4b feat(library/data/list/basic): define nodup and disjoint 2015-04-03 15:44:07 -07:00
Leonardo de Moura
3b0f666646 feat(library/algebra/function): define injective 2015-04-03 15:43:44 -07:00
Leonardo de Moura
01f5dd9fa8 feat(library/data/list): add "erase" function lemmas 2015-04-03 13:18:48 -07:00
Leonardo de Moura
fc0ed5e46c feat(library/data/list/basic): define erase and prove basic theorems 2015-04-02 23:58:47 -07:00
Leonardo de Moura
44ba0e10c0 feat(library/init/logic): add rewrite rules for decidable 2015-04-02 23:31:40 -07:00
Leonardo de Moura
9f3ba66295 feat(library/data/perm): add more theorems 2015-04-02 20:00:46 -07:00
Leonardo de Moura
e47c8c2d9e feat(library/data/list/basic): add quasiequality predicate l₁≈a|l₂, l₁ is equal to l₂ with 'a' inserted somewhere 2015-04-02 20:00:46 -07:00
Leonardo de Moura
5a394ac7ea feat(library/data/perm): add more theorems 2015-04-02 09:21:20 -07:00
Leonardo de Moura
92d6e93971 feat(library/data/perm): cleanup and add calculational proof support to perm 2015-04-02 08:50:05 -07:00
Leonardo de Moura
54136c1ec0 feat(library/data/perm): add list permutation module 2015-04-01 23:00:02 -07:00
Leonardo de Moura
dbe54c4fb5 feat(library/data): define unordered pairs using quotients 2015-04-01 17:30:49 -07:00
Leonardo de Moura
3951b50282 feat(library/data/prod): define swap 2015-04-01 17:30:37 -07:00
Leonardo de Moura
7b64a47221 refactor(library/init): add auxiliary function mk_equivalence 2015-04-01 17:30:20 -07:00
Leonardo de Moura
4fcb560ea7 feat(library/init/funext): add subsingleton_pi instance using funext 2015-04-01 13:05:05 -07:00
Leonardo de Moura
ced742083a feat(library/init/quot): add helper function quot.rec_on_subsingleton₂ 2015-04-01 13:04:41 -07:00
Leonardo de Moura
ed1acd9fb0 feat(library/init): move propext to init/quot, add Jeremy's funext theorem 2015-04-01 12:36:33 -07:00
Leonardo de Moura
0da4f191fc feat(library/init/quot): add rec_on for subsingleton types 2015-04-01 11:57:39 -07:00
Leonardo de Moura
ce5e83eb3e refactor(library/init): move subsingleton to init folder 2015-04-01 11:57:29 -07:00
Leonardo de Moura
b960e123b1 feat(kernel): add experimental support for quotient types 2015-03-31 22:04:16 -07:00
Leonardo de Moura
a52cb009dc refactor(library): reorganize init folder and add setoid 2015-03-31 19:56:05 -07:00
Leonardo de Moura
6e6cc749a8 feat(library/logic/axioms): break prop_complete into propext and em 
The user may want to use propext without assuming em.
 2015-03-31 18:51:43 -07:00
Leonardo de Moura
e35de54cee feat(library/data/list/basic): add aux theorems 2015-03-31 18:38:05 -07:00
Leonardo de Moura
4c0ce9a619 feat(library/data/list/basic): missing theorems 2015-03-30 19:11:45 -07:00
Leonardo de Moura
87f6fc6b6a feat(library/algebra/ring): remove sorrys 2015-03-30 11:55:48 -07:00
Leonardo de Moura
56af7ba535 feat(library/algebra/ordered_ring): remove sorry 2015-03-30 11:01:26 -07:00