For the purposes of the license agreement in the file COPYRIGHT, a
'contributor' is anybody who is listed in this file (CONTRIBUTORS) or who is
listed as an author in one of the source files of this Isabelle distribution.
Contributions to this Isabelle version
--------------------------------------
* January 2016: Florian Haftmann
Abolition of compound operators INFIMUM and SUPREMUM
for complete lattices.
* March 2016: Florian Haftmann
Abstract factorial rings with unique factorization.
* March 2016: Andreas Lochbihler
Reasoning support for monotonicity, continuity and
admissibility in chain-complete partial orders.
* June 2016: Andreas Lochbihler
Formalisation of discrete subprobability distributions.
* July 2016: Daniel Stuewe
Height-size proofs in HOL/Data_Structures
Contributions to Isabelle2016
-----------------------------
* Winter 2016: Jasmin Blanchette, Inria & LORIA & MPII, Aymeric Bouzy,
Ecole polytechnique, Andreas Lochbihler, ETH Zurich, Andrei Popescu,
Middlesex University, and Dmitriy Traytel, ETH Zurich
'corec' command and friends.
* Winter 2016: Manuel Eberl, TUM
Support for real exponentiation ("powr") in the "approximation" method.
(This was removed in Isabelle 2015 due to a changed definition of "powr".)
* Summer 2015 - Winter 2016: Lawrence C Paulson, Cambridge
General, homology form of Cauchy's integral theorem and supporting material
(ported from HOL Light).
* Winter 2015/16: Gerwin Klein, NICTA
New print_record command.
* May - December 2015: Makarius Wenzel
Prover IDE improvements.
More Isar language elements.
Document language refinements.
Poly/ML debugger integration.
Improved multi-platform and multi-architecture support.
* Winter 2015: Manuel Eberl, TUM
The radius of convergence of power series and various summability tests.
Harmonic numbers and the Euler-Mascheroni constant.
The Generalised Binomial Theorem.
The complex and real Gamma/log-Gamma/Digamma/Polygamma functions and their
most important properties.
* Autumn 2015: Manuel Eberl, TUM
Proper definition of division (with remainder) for formal power series;
Euclidean Ring and GCD instance for formal power series.
* Autumn 2015: Florian Haftmann, TUM
Rewrite definitions for global interpretations and sublocale declarations.
* Autumn 2015: Andreas Lochbihler
Bourbaki-Witt fixpoint theorem for increasing functions on chain-complete
partial orders.
* Autumn 2015: Chaitanya Mangla, Lawrence C Paulson, and Manuel Eberl
A large number of additional binomial identities.
* Summer 2015: Daniel Matichuk, NICTA and Makarius Wenzel
Isar subgoal command for proof structure within unstructured proof scripts.
* Summer 2015: Florian Haftmann, TUM
Generic partial division in rings as inverse operation of multiplication.
* Summer 2015: Manuel Eberl and Florian Haftmann, TUM
Type class hierarchy with common algebraic notions of integral (semi)domains
like units, associated elements and normalization wrt. units.
* Summer 2015: Florian Haftmann, TUM
Fundamentals of abstract type class for factorial rings.
* Summer 2015: Julian Biendarra, TUM and Dmitriy Traytel, ETH Zurich
Command to lift a BNF structure on the raw type to the abstract type for
typedefs.
* Summer 2014: Jeremy Avigad, Luke Serafin, CMU, and Johannes Hölzl, TUM
Proof of the central limit theorem: includes weak convergence,
characteristic functions, and Levy's uniqueness and continuity theorem.
Contributions to Isabelle2015
-----------------------------
* 2014/2015: Daniel Matichuk, Toby Murray, NICTA and Makarius Wenzel
The Eisbach proof method language and "match" method.
* Winter 2014 and Spring 2015: Ondrej Kuncar, TUM
Extension of lift_definition to execute lifted functions that have as a
return type a datatype containing a subtype.
* March 2015: Jasmin Blanchette, Inria & LORIA & MPII, Mathias Fleury, MPII,
and Dmitriy Traytel, TUM
More multiset theorems, syntax, and operations.
* December 2014: Johannes Hölzl, Manuel Eberl, Sudeep Kanav, TUM, and
Jeremy Avigad, Luke Serafin, CMU
Various integration theorems: mostly integration on intervals and
substitution.
* September 2014: Florian Haftmann, TUM
Lexicographic order on functions and
sum/product over function bodies.
* August 2014: Andreas Lochbihler, ETH Zurich
Test infrastructure for executing generated code in target languages.
* August 2014: Manuel Eberl, TUM
Generic euclidean algorithms for GCD et al.
Contributions to Isabelle2014
-----------------------------
* July 2014: Thomas Sewell, NICTA
Preserve equality hypotheses in "clarify" and friends. New
"hypsubst_thin" method configuration option.
* Summer 2014: Florian Haftmann, TUM
Consolidation and generalization of facts concerning (abelian)
semigroups and monoids, particularly products (resp. sums) on
finite sets.
* Summer 2014: Mathias Fleury, ENS Rennes, and Albert Steckermeier, TUM
Work on exotic automatic theorem provers for Sledgehammer (LEO-II,
veriT, Waldmeister, etc.).
* June 2014: Florian Haftmann, TUM
Internal reorganisation of the local theory / named target stack.
* June 2014: Sudeep Kanav, TUM, Jeremy Avigad, CMU, and Johannes Hölzl, TUM
Various properties of exponentially, Erlang, and normal distributed
random variables.
* May 2014: Cezary Kaliszyk, University of Innsbruck, and
Jasmin Blanchette, TUM
SML-based engines for MaSh.
* March 2014: René Thiemann
Improved code generation for multisets.
* February 2014: Florian Haftmann, TUM
Permanent interpretation inside theory, locale and class targets
with mixin definitions.
* Spring 2014: Lawrence C Paulson, Cambridge
Theory Complex_Basic_Analysis. Tidying up Number_Theory vs Old_Number_Theory
* Winter 2013 and Spring 2014: Ondrej Kuncar, TUM
Various improvements to Lifting/Transfer, integration with the BNF package.
* Winter 2013 and Spring 2014: Makarius Wenzel, Université Paris-Sud / LRI
Improvements of Isabelle/Scala and Isabelle/jEdit Prover IDE.
* Fall 2013 and Winter 2014: Martin Desharnais, Lorenz Panny,
Dmitriy Traytel, and Jasmin Blanchette, TUM
Various improvements to the BNF-based (co)datatype package,
including a more polished "primcorec" command, optimizations, and
integration in the "HOL" session.
* Winter/Spring 2014: Sascha Boehme, QAware GmbH, and
Jasmin Blanchette, TUM
"SMT2" module and "smt2" proof method, based on SMT-LIB 2 and
Z3 4.3.
* January 2014: Lars Hupel, TUM
An improved, interactive simplifier trace with integration into the
Isabelle/jEdit Prover IDE.
* December 2013: Florian Haftmann, TUM
Consolidation of abstract interpretations concerning min and max.
* November 2013: Florian Haftmann, TUM
Abolition of negative numeral literals in the logic.
Contributions to Isabelle2013-1
-------------------------------
* September 2013: Lars Noschinski, TUM
Conversion between function definitions as list of equations and
case expressions in HOL.
New library Simps_Case_Conv with commands case_of_simps,
simps_of_case.
* September 2013: Nik Sultana, University of Cambridge
Improvements to HOL/TPTP parser and import facilities.
* September 2013: Johannes Hölzl and Dmitriy Traytel, TUM
New "coinduction" method (residing in HOL-BNF) to avoid boilerplate.
* Summer 2013: Makarius Wenzel, Université Paris-Sud / LRI
Improvements of Isabelle/Scala and Isabelle/jEdit Prover IDE.
* Summer 2013: Manuel Eberl, TUM
Generation of elimination rules in the function package.
New command "fun_cases".
* Summer 2013: Christian Sternagel, JAIST
Improved support for ad hoc overloading of constants, including
documentation and examples.
* Spring and Summer 2013: Lorenz Panny, Dmitriy Traytel, and
Jasmin Blanchette, TUM
Various improvements to the BNF-based (co)datatype package, including
"primrec_new" and "primcorec" commands and a compatibility layer.
* Spring and Summer 2013: Ondrej Kuncar, TUM
Various improvements of Lifting and Transfer packages.
* Spring 2013: Brian Huffman, Galois Inc.
Improvements of the Transfer package.
* Summer 2013: Daniel Kühlwein, ICIS, Radboud University Nijmegen
Jasmin Blanchette, TUM
Various improvements to MaSh, including a server mode.
* First half of 2013: Steffen Smolka, TUM
Further improvements to Sledgehammer's Isar proof generator.
* May 2013: Florian Haftmann, TUM
Ephemeral interpretation in local theories.
* May 2013: Lukas Bulwahn and Nicolai Schaffroth, TUM
Spec_Check: A Quickcheck tool for Isabelle/ML.
* April 2013: Stefan Berghofer, secunet Security Networks AG
Dmitriy Traytel, TUM
Makarius Wenzel, Université Paris-Sud / LRI
Case translations as a separate check phase independent of the
datatype package.
* March 2013: Florian Haftmann, TUM
Reform of "big operators" on sets.
* March 2013: Florian Haftmann, TUM
Algebraic locale hierarchy for orderings and (semi)lattices.
* February 2013: Florian Haftmann, TUM
Reworking and consolidation of code generation for target language
numerals.
* February 2013: Florian Haftmann, TUM
Sieve of Eratosthenes.
Contributions to Isabelle2013
-----------------------------
* 2012: Makarius Wenzel, Université Paris-Sud / LRI
Improvements of Isabelle/Scala and Isabelle/jEdit Prover IDE.
* Fall 2012: Daniel Kühlwein, ICIS, Radboud University Nijmegen
Jasmin Blanchette, TUM
Implemented Machine Learning for Sledgehammer (MaSh).
* Fall 2012: Steffen Smolka, TUM
Various improvements to Sledgehammer's Isar proof generator,
including a smart type annotation algorithm and proof shrinking.
* December 2012: Alessandro Coglio, Kestrel
Contributions to HOL's Lattice library.
* November 2012: Fabian Immler, TUM
"Symbols" dockable for Isabelle/jEdit.
* November 2012: Fabian Immler, TUM
Proof of the Daniell-Kolmogorov theorem: the existence of the limit
of projective families.
* October 2012: Andreas Lochbihler, KIT
Efficient construction of red-black trees from sorted associative
lists.
* September 2012: Florian Haftmann, TUM
Lattice instances for type option.
* September 2012: Christian Sternagel, JAIST
Consolidated HOL/Library (theories: Prefix_Order, Sublist, and
Sublist_Order) w.r.t. prefixes, suffixes, and embedding on lists.
* August 2012: Dmitriy Traytel, Andrei Popescu, Jasmin Blanchette, TUM
New BNF-based (co)datatype package.
* August 2012: Andrei Popescu and Dmitriy Traytel, TUM
Theories of ordinals and cardinals.
* July 2012: Makarius Wenzel, Université Paris-Sud / LRI
Advanced support for Isabelle sessions and build management, notably
"isabelle build".
* June 2012: Felix Kuperjans, Lukas Bulwahn, TUM and Rafal Kolanski, NICTA
Simproc for rewriting set comprehensions into pointfree expressions.
* May 2012: Andreas Lochbihler, KIT
Theory of almost everywhere constant functions.
* 2010-2012: Markus Kaiser and Lukas Bulwahn, TUM
Graphview in Scala/Swing.
Contributions to Isabelle2012
-----------------------------
* April 2012: Johannes Hölzl, TUM
Probability: Introduced type to represent measures instead of
locales.
* April 2012: Johannes Hölzl, Fabian Immler, TUM
Float: Moved to Dyadic rationals to represent floating point numers.
* April 2012: Thomas Sewell, NICTA and
2010: Sascha Boehme, TUM
Theory HOL/Word/WordBitwise: logic/circuit expansion of bitvector
equalities/inequalities.
* March 2012: Christian Sternagel, JAIST
Consolidated theory of relation composition.
* March 2012: Nik Sultana, University of Cambridge
HOL/TPTP parser and import facilities.
* March 2012: Cezary Kaliszyk, University of Innsbruck and
Alexander Krauss, QAware GmbH
Faster and more scalable Import mechanism for HOL Light proofs.
* January 2012: Florian Haftmann, TUM, et al.
(Re-)Introduction of the "set" type constructor.
* 2012: Ondrej Kuncar, TUM
New package Lifting, various improvements and refinements to the
Quotient package.
* 2011/2012: Jasmin Blanchette, TUM
Various improvements to Sledgehammer, notably: tighter integration
with SPASS, support for more provers (Alt-Ergo, iProver,
iProver-Eq).
* 2011/2012: Makarius Wenzel, Université Paris-Sud / LRI
Various refinements of local theory infrastructure.
Improvements of Isabelle/Scala layer and Isabelle/jEdit Prover IDE.
Contributions to Isabelle2011-1
-------------------------------
* September 2011: Peter Gammie
Theory HOL/Library/Saturated: numbers with saturated arithmetic.
* August 2011: Florian Haftmann, Johannes Hölzl and Lars Noschinski, TUM
Refined theory on complete lattices.
* August 2011: Brian Huffman, Portland State University
Miscellaneous cleanup of Complex_Main and Multivariate_Analysis.
* June 2011: Brian Huffman, Portland State University
Proof method "countable_datatype" for theory Library/Countable.
* 2011: Jasmin Blanchette, TUM
Various improvements to Sledgehammer, notably: use of sound
translations, support for more provers (Waldmeister, LEO-II,
Satallax). Further development of Nitpick and 'try' command.
* 2011: Andreas Lochbihler, Karlsruhe Institute of Technology
Theory HOL/Library/Cset_Monad allows do notation for computable sets
(cset) via the generic monad ad-hoc overloading facility.
* 2011: Johannes Hölzl, Armin Heller, TUM and
Bogdan Grechuk, University of Edinburgh
Theory HOL/Library/Extended_Reals: real numbers extended with plus
and minus infinity.
* 2011: Makarius Wenzel, Université Paris-Sud / LRI
Various building blocks for Isabelle/Scala layer and Isabelle/jEdit
Prover IDE.
Contributions to Isabelle2011
-----------------------------
* January 2011: Stefan Berghofer, secunet Security Networks AG
HOL-SPARK: an interactive prover back-end for SPARK.
* October 2010: Bogdan Grechuk, University of Edinburgh
Extended convex analysis in Multivariate Analysis.
* October 2010: Dmitriy Traytel, TUM
Coercive subtyping via subtype constraints.
* October 2010: Alexander Krauss, TUM
Command partial_function for function definitions based on complete
partial orders in HOL.
* September 2010: Florian Haftmann, TUM
Refined concepts for evaluation, i.e., normalization of terms using
different techniques.
* September 2010: Florian Haftmann, TUM
Code generation for Scala.
* August 2010: Johannes Hoelzl, Armin Heller, and Robert Himmelmann, TUM
Improved Probability theory in HOL.
* July 2010: Florian Haftmann, TUM
Reworking and extension of the Imperative HOL framework.
* July 2010: Alexander Krauss, TUM and Christian Sternagel, University
of Innsbruck
Ad-hoc overloading. Generic do notation for monads.
Contributions to Isabelle2009-2
-------------------------------
* 2009/2010: Stefan Berghofer, Alexander Krauss, and Andreas Schropp, TUM,
Makarius Wenzel, TUM / LRI
Elimination of type classes from proof terms.
* April 2010: Florian Haftmann, TUM
Reorganization of abstract algebra type classes.
* April 2010: Florian Haftmann, TUM
Code generation for data representations involving invariants;
various collections avaiable in theories Fset, Dlist, RBT,
Mapping and AssocList.
* March 2010: Sascha Boehme, TUM
Efficient SHA1 library for Poly/ML.
* February 2010: Cezary Kaliszyk and Christian Urban, TUM
Quotient type package for Isabelle/HOL.
Contributions to Isabelle2009-1
-------------------------------
* November 2009, Brian Huffman, PSU
New definitional domain package for HOLCF.
* November 2009: Robert Himmelmann, TUM
Derivation and Brouwer's fixpoint theorem in Multivariate Analysis.
* November 2009: Stefan Berghofer and Lukas Bulwahn, TUM
A tabled implementation of the reflexive transitive closure.
* November 2009: Lukas Bulwahn, TUM
Predicate Compiler: a compiler for inductive predicates to
equational specifications.
* November 2009: Sascha Boehme, TUM and Burkhart Wolff, LRI Paris
HOL-Boogie: an interactive prover back-end for Boogie and VCC.
* October 2009: Jasmin Blanchette, TUM
Nitpick: yet another counterexample generator for Isabelle/HOL.
* October 2009: Sascha Boehme, TUM
Extension of SMT method: proof-reconstruction for the SMT solver Z3.
* October 2009: Florian Haftmann, TUM
Refinement of parts of the HOL datatype package.
* October 2009: Florian Haftmann, TUM
Generic term styles for term antiquotations.
* September 2009: Thomas Sewell, NICTA
More efficient HOL/record implementation.
* September 2009: Sascha Boehme, TUM
SMT method using external SMT solvers.
* September 2009: Florian Haftmann, TUM
Refinement of sets and lattices.
* July 2009: Jeremy Avigad and Amine Chaieb
New number theory.
* July 2009: Philipp Meyer, TUM
HOL/Library/Sum_Of_Squares: functionality to call a remote csdp
prover.
* July 2009: Florian Haftmann, TUM
New quickcheck implementation using new code generator.
* July 2009: Florian Haftmann, TUM
HOL/Library/Fset: an explicit type of sets; finite sets ready to use
for code generation.
* June 2009: Florian Haftmann, TUM
HOL/Library/Tree: search trees implementing mappings, ready to use
for code generation.
* March 2009: Philipp Meyer, TUM
Minimization tool for results from Sledgehammer.
Contributions to Isabelle2009
-----------------------------
* March 2009: Robert Himmelmann, TUM and Amine Chaieb, University of
Cambridge
Elementary topology in Euclidean space.
* March 2009: Johannes Hoelzl, TUM
Method "approximation", which proves real valued inequalities by
computation.
* February 2009: Filip Maric, Univ. of Belgrade
A Serbian theory.
* February 2009: Jasmin Christian Blanchette, TUM
Misc cleanup of HOL/refute.
* February 2009: Timothy Bourke, NICTA
New find_consts command.
* February 2009: Timothy Bourke, NICTA
"solves" criterion for find_theorems and auto_solve option
* December 2008: Clemens Ballarin, TUM
New locale implementation.
* December 2008: Armin Heller, TUM and Alexander Krauss, TUM
Method "sizechange" for advanced termination proofs.
* November 2008: Timothy Bourke, NICTA
Performance improvement (factor 50) for find_theorems.
* 2008: Florian Haftmann, TUM
Various extensions and restructurings in HOL, improvements
in evaluation mechanisms, new module binding.ML for name bindings.
* October 2008: Fabian Immler, TUM
ATP manager for Sledgehammer, based on ML threads instead of Posix
processes. Additional ATP wrappers, including remote SystemOnTPTP
services.
* September 2008: Stefan Berghofer, TUM and Marc Bezem, Univ. Bergen
Prover for coherent logic.
* August 2008: Fabian Immler, TUM
Vampire wrapper script for remote SystemOnTPTP service.
Contributions to Isabelle2008
-----------------------------
* 2007/2008:
Alexander Krauss, TUM and Florian Haftmann, TUM and Stefan Berghofer, TUM
HOL library improvements.
* 2007/2008: Brian Huffman, PSU
HOLCF library improvements.
* 2007/2008: Stefan Berghofer, TUM
HOL-Nominal package improvements.
* March 2008: Markus Reiter, TUM
HOL/Library/RBT: red-black trees.
* February 2008: Alexander Krauss, TUM and Florian Haftmann, TUM and
Lukas Bulwahn, TUM and John Matthews, Galois:
HOL/Library/Imperative_HOL: Haskell-style imperative data structures
for HOL.
* December 2007: Norbert Schirmer, Uni Saarbruecken
Misc improvements of record package in HOL.
* December 2007: Florian Haftmann, TUM
Overloading and class instantiation target.
* December 2007: Florian Haftmann, TUM
New version of primrec package for local theories.
* December 2007: Alexander Krauss, TUM
Method "induction_scheme" in HOL.
* November 2007: Peter Lammich, Uni Muenster
HOL-Lattice: some more lemmas.
Contributions to Isabelle2007
-----------------------------
* October 2007: Norbert Schirmer, TUM / Uni Saarbruecken
State Spaces: The Locale Way (in HOL).
* October 2007: Mark A. Hillebrand, DFKI
Robust sub/superscripts in LaTeX document output.
* August 2007: Jeremy Dawson, NICTA and Paul Graunke, Galois and Brian
Huffman, PSU and Gerwin Klein, NICTA and John Matthews, Galois
HOL-Word: a library for fixed-size machine words in Isabelle.
* August 2007: Brian Huffman, PSU
HOL/Library/Boolean_Algebra and HOL/Library/Numeral_Type.
* June 2007: Amine Chaieb, TUM
Semiring normalization and Groebner Bases.
Support for dense linear orders.
* June 2007: Joe Hurd, Oxford
Metis theorem-prover.
* 2007: Kong W. Susanto, Cambridge
HOL: Metis prover integration.
* 2007: Stefan Berghofer, TUM
HOL: inductive predicates and sets.
* 2007: Norbert Schirmer, TUM
HOL/record: misc improvements.
* 2006/2007: Alexander Krauss, TUM
HOL: function package and related theories on termination.
* 2006/2007: Florian Haftmann, TUM
Pure: generic code generator framework.
Pure: class package.
HOL: theory reorganization, code generator setup.
* 2006/2007: Christian Urban, TUM and Stefan Berghofer, TUM and
Julien Narboux, TUM
HOL/Nominal package and related tools.
* November 2006: Lukas Bulwahn, TUM
HOL: method "lexicographic_order" for function package.
* October 2006: Stefan Hohe, TUM
HOL-Algebra: ideals and quotients over rings.
* August 2006: Amine Chaieb, TUM
Experimental support for generic reflection and reification in HOL.
* July 2006: Rafal Kolanski, NICTA
Hex (0xFF) and binary (0b1011) numerals.
* May 2006: Klaus Aehlig, LMU
Command 'normal_form': normalization by evaluation.
* May 2006: Amine Chaieb, TUM
HOL-Complex: Ferrante and Rackoff Algorithm for linear real
arithmetic.
* February 2006: Benjamin Porter, NICTA
HOL and HOL-Complex: generalised mean value theorem, continuum is
not denumerable, harmonic and arithmetic series, and denumerability
of rationals.
* October 2005: Martin Wildmoser, TUM
Sketch for Isar 'guess' element.
Contributions to Isabelle2005
-----------------------------
* September 2005: Lukas Bulwahn and Bernhard Haeupler, TUM
HOL-Complex: Formalization of Taylor series.
* September 2005: Stephan Merz, Alwen Tiu, QSL Loria
Components for SAT solver method using zChaff.
* September 2005: Ning Zhang and Christian Urban, LMU Munich
A Chinese theory.
* September 2005: Bernhard Haeupler, TUM
Method comm_ring for proving equalities in commutative rings.
* July/August 2005: Jeremy Avigad, Carnegie Mellon University
Various improvements of the HOL and HOL-Complex library.
* July 2005: Florian Zuleger, Johannes Hoelzl, and Simon Funke, TUM
Some structured proofs about completeness of real numbers.
* May 2005: Rafal Kolanski and Gerwin Klein, NICTA
Improved retrieval of facts from theory/proof context.
* February 2005: Lucas Dixon, University of Edinburgh
Improved subst method.
* 2005: Brian Huffman, OGI
Various improvements of HOLCF.
Some improvements of the HOL-Complex library.
* 2005: Claire Quigley and Jia Meng, University of Cambridge
Some support for asynchronous communication with external provers
(experimental).
* 2005: Florian Haftmann, TUM
Contributions to document 'sugar'.
Various ML combinators, notably linear functional transformations.
Some cleanup of ML legacy.
Additional antiquotations.
Improved Isabelle web site.
* 2004/2005: David Aspinall, University of Edinburgh
Various elements of XML and PGIP based communication with user
interfaces (experimental).
* 2004/2005: Gerwin Klein, NICTA
Contributions to document 'sugar'.
Improved Isabelle web site.
Improved HTML presentation of theories.
* 2004/2005: Clemens Ballarin, TUM
Provers: tools for transitive relations and quasi orders.
Improved version of locales, notably interpretation of locales.
Improved version of HOL-Algebra.
* 2004/2005: Amine Chaieb, TUM
Improved version of HOL presburger method.
* 2004/2005: Steven Obua, TUM
Improved version of HOL/Import, support for HOL-Light.
Improved version of HOL-Complex-Matrix.
Pure/defs: more sophisticated checks on well-formedness of overloading.
Pure/Tools: an experimental evaluator for lambda terms.
* 2004/2005: Norbert Schirmer, TUM
Contributions to document 'sugar'.
Improved version of HOL/record.
* 2004/2005: Sebastian Skalberg, TUM
Improved version of HOL/Import.
Some internal ML reorganizations.
* 2004/2005: Tjark Weber, TUM
SAT solver method using zChaff.
Improved version of HOL/refute.
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