Floris van Doorn
fa1979c128
feat(datatypes): let the type of unit be the lowest non-Prop universe
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The definitional package (brec_on and cases_on) now use poly_unit instead of unit
closes #698
2015-06-25 17:33:46 -07:00
Leonardo de Moura
1cbace9df6
feat(library/tactic/congruence_tactic): add congruence lemma generator
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The generated congruence theorems ignore arguments that are subsingleton types.
2015-06-05 22:00:10 -07:00
Leonardo de Moura
dce86b3a84
feat(library/init/logic): add 'eq.drec' (in standard Lean) with a signature very similar to eq.rec in the HoTT library
2015-06-03 17:29:26 -07:00
Leonardo de Moura
d95c064a29
feat(library/simplifier/ceqv): add to_ceqv procedure
2015-05-27 16:35:56 -07:00
Leonardo de Moura
b1ece388a6
feat(frontends/lean,library/tactic/induction_tactic): improve induction tactic notation, expand induction tactic implementation
2015-05-18 09:25:07 -07:00
Leonardo de Moura
84faef5d5d
feat(library/tactic/rewrite_tactic): rewrite tactic with 'iff' lemmas
2015-05-14 18:27:13 -07:00
Leonardo de Moura
065a1f7501
feat(library/tactic): add 'induction' tactic skeleton
2015-05-12 20:21:25 -07:00
Leonardo de Moura
aff9257c72
feat(frontends/lean): allow → to be used in calc proofs
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see issue #586
2015-05-07 12:28:47 -07:00
Leonardo de Moura
415ca2b93f
feat(library/tactic): add 'congruence' tactic
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It is the f_equal described at issue #500 .
2015-05-02 12:58:46 -07:00
Leonardo de Moura
9ba8b284a1
fix(library/tactic/apply_tactic): add eapply, and fix issue #361
2015-05-01 15:08:00 -07:00
Leonardo de Moura
2d9c950144
feat(library/tactic/constructor_tactic): allow 'constructor' tactic without index
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see issue #500
2015-04-30 21:15:07 -07:00
Leonardo de Moura
9c8a63caec
feat(library/tactic): add 'contradiction' tactic
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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
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closes #421
2015-04-30 11:57:40 -07:00
Leonardo de Moura
d2c7b5c319
feat(library/tactic): add 'let' tactic
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closes #555
2015-04-28 17:24:43 -07:00
Leonardo de Moura
ca8943f45b
feat(library,hott): remove rapply tactic
2015-04-27 15:06:16 -07:00
Leonardo de Moura
9d01868361
feat(frontends/lean): use rewrite tactic to implement unfold (it has a unfold step)
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closes #502
2015-04-24 17:23:12 -07:00
Leonardo de Moura
2613e7c444
fix(frontends/lean): bug when handling identifiers in tactics
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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
Leonardo de Moura
6f6d106a10
feat(library/tactic): add "check_expr" tactic
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closes #486
2015-04-19 19:00:05 -07:00
Leonardo de Moura
2bc13f6bfd
feat(library/tactic/exact): enforce goal type during elaboration when executing 'exact' tactic
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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
4ec0e1b07c
feat(frontends/lean): improve calc mode
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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
b9e3c474c9
feat(library/tactic): add all_goals tactic
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closes #501
2015-03-25 17:42:34 -07:00
Leonardo de Moura
5bf46d1226
fix(library/tactic/inversion_tactic): improve 'cases' tactic for HoTT mode
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closes #481
2015-03-23 18:06:11 -07:00
Leonardo de Moura
1490bdad49
feat(frontends/lean): add version of 'exact' tactic (sexact) that enforces goal type during term elaboration
2015-03-06 17:34:45 -08:00
Leonardo de Moura
368f9d347e
refactor(frontends/lean): approach used to parse tactics
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The previous approach was too fragile
TODO: we should add separate parsing tables for tactics
2015-03-05 18:11:21 -08:00
Leonardo de Moura
ca57b43698
feat(library/tactic): add 'change' tactic
2015-03-01 14:15:39 -08:00
Leonardo de Moura
af787d9b7f
fix(library/constants): regenerate constants.cpp and fix affected files
2015-02-22 09:22:51 -08:00
Leonardo de Moura
058377c8c6
feat(library/tactic/rewrite_tactic): treat iff.refl as trivial step in the rewrite tactic
2015-02-08 17:27:59 -08:00
Leonardo de Moura
f0fac1ae0e
feat(library/constants): add eq.intro
2015-02-04 15:27:18 -08:00
Leonardo de Moura
27f6bfd3f0
refactor(*): add file constants.txt with all constants used by the Lean binary
2015-01-23 16:50:32 -08:00
