| Fri, 20 Jul 2007 14:28:01 +0200 |
haftmann |
split class abs from class minus
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| Tue, 03 Jul 2007 18:42:09 +0200 |
huffman |
convert instance proofs to Isar style
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| Tue, 03 Jul 2007 17:28:36 +0200 |
huffman |
rename class dom to ring_1_no_zero_divisors
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| Tue, 03 Jul 2007 01:26:06 +0200 |
huffman |
instance pordered_comm_ring < pordered_ring
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| Sat, 30 Jun 2007 17:30:10 +0200 |
obua |
added ordered_ring and ordered_semiring
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| Mon, 25 Jun 2007 15:19:18 +0200 |
nipkow |
removed redundant lemmas
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| Sun, 24 Jun 2007 21:15:55 +0200 |
nipkow |
tex problem fixed
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| Sun, 24 Jun 2007 20:55:41 +0200 |
nipkow |
tuned and used field_simps
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| Sat, 23 Jun 2007 19:33:22 +0200 |
nipkow |
tuned and renamed group_eq_simps and ring_eq_simps
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| Sun, 17 Jun 2007 18:47:03 +0200 |
nipkow |
tuned laws for cancellation in divisions for fields.
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| Sun, 17 Jun 2007 13:39:29 +0200 |
chaieb |
added theorems nonzero_mult_divide_cancel_right' nonzero_mult_divide_cancel_left' ordered_field_no_lb ordered_field_no_ub
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| Sat, 16 Jun 2007 15:01:54 +0200 |
nipkow |
The simprocs "divide_cancel_factor" and "ring_eq_cancel_factor" no
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| Fri, 15 Jun 2007 15:10:32 +0200 |
nipkow |
made divide_self a simp rule
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| Thu, 14 Jun 2007 18:33:31 +0200 |
wenzelm |
tuned proofs: avoid implicit prems;
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| Mon, 11 Jun 2007 16:21:03 +0200 |
nipkow |
hid constant "dom"
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| Thu, 24 May 2007 16:52:54 +0200 |
obua |
Squared things out.
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| Tue, 22 May 2007 16:47:22 +0200 |
huffman |
add missing instance declarations
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| Thu, 17 May 2007 19:49:16 +0200 |
haftmann |
tuned
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| Thu, 17 May 2007 18:32:17 +0200 |
huffman |
added classes ring_no_zero_divisors and dom (non-commutative version of idom);
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| Thu, 17 May 2007 08:42:51 +0200 |
huffman |
instance division_ring < no_zero_divisors; clean up field instance proofs
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| Sun, 06 May 2007 21:49:29 +0200 |
haftmann |
added auxiliary lemmas for proof tools
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| Thu, 29 Mar 2007 14:21:45 +0200 |
haftmann |
dropped legacy ML bindings
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| Fri, 16 Mar 2007 21:32:08 +0100 |
haftmann |
adjusted to new lattice theory developement in Lattices.thy / FixedPoint.thy
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| Fri, 09 Mar 2007 08:45:50 +0100 |
haftmann |
stepping towards uniform lattice theory development in HOL
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| Fri, 02 Mar 2007 15:43:21 +0100 |
haftmann |
now using "class"
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| Mon, 13 Nov 2006 15:43:05 +0100 |
haftmann |
dropped Inductive dependency
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| Thu, 09 Nov 2006 00:43:12 +0100 |
huffman |
added lemma mult_mono'
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| Tue, 07 Nov 2006 09:33:47 +0100 |
krauss |
* Added annihilation axioms ("x * 0 = 0") to axclass semiring_0.
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| Wed, 20 Sep 2006 00:24:24 +0200 |
wenzelm |
renamed axclass_xxxx axclasses;
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| Tue, 19 Sep 2006 18:13:10 +0200 |
obua |
renamed axclass_xxxx axclasses
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| Sun, 10 Sep 2006 05:34:24 +0200 |
huffman |
added axclass division_ring (like field without commutativity; includes e.g. quaternions) and generalized some theorems from field to division_ring
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| Mon, 10 Apr 2006 16:00:34 +0200 |
obua |
Moved stuff from Ring_and_Field to Matrix
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| Wed, 11 Jan 2006 11:00:26 +0100 |
paulson |
tidied, and added missing thm divide_less_eq_1_neg
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| Mon, 09 Jan 2006 13:28:06 +0100 |
paulson |
simplified the special-case simprules
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| Tue, 16 Aug 2005 18:53:11 +0200 |
paulson |
more simprules now have names
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| Tue, 12 Jul 2005 17:56:03 +0200 |
avigad |
added lemmas to OrderedGroup.thy (reasoning about signs, absolute value, triangle inequalities)
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| Sat, 25 Jun 2005 16:06:17 +0200 |
nipkow |
Changes due to new abel_cancel.ML
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| Wed, 04 May 2005 10:42:43 +0200 |
nipkow |
fixed lin.arith
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| Tue, 19 Apr 2005 10:59:31 +0200 |
obua |
Removed mult_commute axiom from comm_semiring axclass.
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| Mon, 07 Mar 2005 18:19:55 +0100 |
obua |
Cleaning up HOL/Matrix
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| Tue, 01 Feb 2005 18:01:57 +0100 |
paulson |
the new subst tactic, by Lucas Dixon
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| Thu, 07 Oct 2004 15:42:30 +0200 |
paulson |
simplification tweaks for better arithmetic reasoning
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| Tue, 05 Oct 2004 15:30:50 +0200 |
paulson |
new simprules for abs and for things like a/b<1
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| Mon, 04 Oct 2004 15:28:03 +0200 |
paulson |
revised simprules for division
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| Fri, 10 Sep 2004 20:04:14 +0200 |
nipkow |
Added antisymmetry simproc
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| Fri, 03 Sep 2004 17:10:36 +0200 |
obua |
Matrix theory, linear programming
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| Wed, 18 Aug 2004 11:09:40 +0200 |
nipkow |
import -> imports
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| Mon, 16 Aug 2004 14:22:27 +0200 |
nipkow |
New theory header syntax.
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| Mon, 26 Jul 2004 17:34:52 +0200 |
paulson |
converting Hyperreal/Transcendental to Isar script
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| Tue, 29 Jun 2004 11:18:34 +0200 |
kleing |
license change to BSD
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| Mon, 14 Jun 2004 14:20:55 +0200 |
obua |
Further development of matrix theory
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| Fri, 21 May 2004 21:16:51 +0200 |
wenzelm |
removed duplicate thms;
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| Tue, 18 May 2004 10:01:44 +0200 |
obua |
Modification / Installation of Provers/Arith/abel_cancel.ML for OrderedGroup.thy
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| Tue, 11 May 2004 20:11:08 +0200 |
obua |
changes made due to new Ring_and_Field theory
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| Fri, 16 Apr 2004 20:33:16 +0200 |
nipkow |
Moved ring stuff from ex into Ring_and_Field.
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| Thu, 15 Apr 2004 14:17:45 +0200 |
nipkow |
Added ex/Exceptions.thy
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| Thu, 01 Apr 2004 10:54:32 +0200 |
paulson |
new type class abelian_group
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| Fri, 19 Mar 2004 10:48:22 +0100 |
paulson |
new thms
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| Thu, 04 Mar 2004 12:06:07 +0100 |
paulson |
new material from Avigad, and simplified treatment of division by 0
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| Mon, 01 Mar 2004 13:51:21 +0100 |
paulson |
new Ring_and_Field hierarchy, eliminating redundant axioms
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