# ChangeLog ## [3.9.4] 2022-08-14 -- Postive systems -- Polynomial constraints for loattice points -- Coarse project-and-lift -- Patching algorithm in pproject_and_lift ## [3.9.3] 2022-04-21 -- MS Windows binary with all optional libraries -- option NoHilbertBasisOutput added -- short reference added -- Bug fixes -- Normaliz.lib for Singular updated ## [3.9.2] 2022-02-07 -- compilation for MS Windows under MSYS. -- bug fixes and improvements -- extension of sparse vectors to ranges of indices -- unit_matrix as an input type. -- output file with precomputed data as input for future computations -- cone constructor from Normaliz input file -- Slight modification of reduction.cpp to prevent errors in clang compilations ## [3.9.1] 2021-09-01 -- better handling of distributed computation -- Python 2 builds dropped -- bugfix and improvement of hollow triangulation -- compatibility for operator < in dynamic_bitset with boost::dynamic_bitset ## [3.9.0] 2021-07-02 -- volume and integral by signed decomposition -- variant ExploitIsosMult added to volume by descent -- InputAutomorphisms and AmbientAutomorphisms -- SHA256 hash values for certain data -- Placing and pulling triangulations ## [3.8.10] 2021-02-05 -- change from Travis to GitHub actions -- improvement of configure.ac for finding nauty -- data structure changed for triangulations and decompositions -- PyNormaliz added to manual ## [3.8.9] 2020-09-25 -- extreme rays in floating point available -- TriangulationGenerators replace Generators ## [3.8.8] 2020-08-25 -- dual versions of face lattice, f-vector and incidence -- rational lattices ## [3.8.7] 2020-07-25 -- improvements in finding dependencies -- addition of IsEmptySemiopen and CoveringFace -- source file structure changed -- input in libnormaliz ## [3.8.6] 2020-06-17 -- tests for installation in SageMath ## [3.8.5] 2020-06-20 -- several small improvements -- significant improvement in computation of integer hulls -- refined triangulations added ## [3.8.4] 2020-02-20 -- completely revised precomputed_data -- numerous fixes of small inaccuracies -- especially for "mixed" input (generators and constraints simultaneously) -- many additional tests and improvement of build infrastructure -- new package layout for the releases -- update of nauty and CoCoALib releases ## [3.8.3] 2019-11-26 -- repair of modifyCone ## [3.8.2] 2019-11-23 -- removed dependency on Boost by own bitset class -- improvements in convex hull algorithm -- internal representation of scalable renf_class_elem vector with integral coefficients -- improvements in build infrastructure ## [3.8.1] 2019-09-30 -- bugfix codimension in face lattice output -- update of Flint installation to avoid PIE clash -- improve nauty installation ## [3.8.0] 2019-09-10 -- bugfix triangulation and cone decomposition -- computation of automorphism groups -- Computation goal Incidence added -- SCIP removed ## [3.7.4] 2019-07-31 -- bugfix in face lattice computation -- nmz_config.h indicates optional packages ## [3.7.3] 2019-06-09 -- "Dybamic" added -- modifyCone added -- VPATH builds in install scripts ## [3.7.2] 2019-04-25 -- update to PyNormaliz 2.2 ## [3.7.1] 2019-04-23 -- output now a class of libnormaliz -- introduction of nmz_config.h ## [3.7.0] 2019-04-15 -- QNormaliz realized within Normaliz -- alignment of manual and code -- NumberLatticePoints added -- FaceLattice and FVector added -- use of refurbished e-antic based on Flint 2.5.2 ## [3.6.3] 2018-08-21 -- configure.ac back to "old" treatment of Flint ## [3.6.2] 2018-07-31 -- Better handling of degenerate polytopes ## [3.6.1] 2018-07-07 -- Improvements in build scripts -- Introduction of NoGradingDenom and better treatment of polytopes -- Refinements in the computation of volumes ## [3.6.0] 2018-05-31 -- QNormaliz with e-antic included in release -- Computation goal EhrhartQuasipolynomial introduced, use of KeepOrder extended -- Hilbert basis of recession cone can be set as precomputed data -- improved installation and build system ## [3.5.4] 2018-04-13 -- triangulation, cone and Stanley decomposition available for cones over polytopes defined by inhomogeneous data -- EhrhartSeries introduced as a computation goal -- QNormaliz extended to algebraic polytopes (outside of release) ## [3.5.3] 2018-04-03 -- repair of performance loss -- bug fixes ## [3.5.2] 2018-03-11 -- Descent algorithm for volumes of polytopes -- recession rank also computed from Hilbert basis -- install scripts improved for Mac OS -- bug fixes ## [3.5.1] 2018-01-15 -- Uniqueness in output of not uniquely determined results (bases of sublattices, equations), necessary to make all tests yield the same results on all systems ## [3.5.0] 2017-12-11 -- LLL reduced coordinates for coordinate dependent algorithms -- Expansion of Hilbert series and weighted Ehrhart series -- projection of cones -- Euclidean volumes -- Flint as an optional library -- Dockerfile -- install scripts ## [3.4.1] 2017-11-15 -- bugfix ## [3.4.0] 2017-08-20 -- limit of parallelization via libnormaliz (and default limit of 8 threads) -- floating point numbers in input -- project-and-lift algorithm for lattice points in polytopes (default choice), also with a floating point variant -- subdivision of large simplices by project-and-lift (default choice) -- option to suppress output of extreme rays (can look rather ugly) -- use of Scip optional, even if Normaliz has been built with Scip -- fast Gorenstein test -- restriction of number of significant coefficients of quasipolynomial -- definition of semi-open parallelepipeds in input and output of their lattice points ## [3.3.0] 2017-05-15 -- inclusion of NmzIntegrate in libnormaliz -- rational numbers in input -- improvement of polynomial arithmetic -- controlled interruption ## [3.2.1] 2017-02-22 -- automatic choice of symmetrization -- change to HSOP from of Hilbert series possible after computation -- fits PyNormaliz 1.4 ## [3.2.0] 2017-01-01 -- constraints in symbolic format -- a better implementation of Approximate and its use in the inhomogeneous case, -- option Symmetzrize that produces symmetrized input for and runs nmzIntegrate and runs on it, -- QNormaliz, a version of Normaliz using coordinates in an extension of the rational numbers (restricted to convex hull computations and triangulation), -- further automatic choices of algorithmic variants. ## [3.1.4] 2016-11-26 - automatic choice of dual or primal algorithm (unless fixed by the user) --extension of ConeProperty, constructors based on Matrix<Integer>, additional functions for retrieval of results ## [3.1.3] 2016-09-28 - bug fixes ## [3.1.2] 2016-08-25 - additional autotools build system - sparse vectors and matrices in input files added - choice of output directory added - option HSOP added ## [3.1.1] 2016-04-05 - index of unit group extension added - formatted vectors matrices in input files added - "constraints" in input files added - transposed matrices in input file added ## [3.1.0] 2016-02-04 - support for nonpointed cones / input of subspace - new computation goals: IsIntegrallyClosed and WitnessNotIntegrallyClosed - new computation goal: IntegerHull - new computation goal: ConeDecomposition ## [3.0.0] - 2015-09-18 - new, more natural comfortable input syntax (with backward compatibility) - standardization of output improved, especially for Hilbert series (not backward compatible) - new computation goals: module generators over original monoid and class group - Additional input types, in particular generators for lattices; free combination of generators and constraints - computation goals can be set in the input file - long options available - automatic choice of integer type - improved linear algebra with much better protection against overflows - reduction of the arithmetical complexity by subdivision of large simplicial cones and bottom decomposition based on SCIP and approximation methods - improvement of Fourier-Motzkin elimination by ordering the generators ## [2.12.2] - 2014-01-22 - bug fix in volume computation "-v" - change max_rank_submatrix back to pre2.12 version, avoids some overflows ## [2.12.1] - 2014-10-23 - bug fix in dual algorithm - workaround for compiler bug in intel windows compiler for -v ## [2.12.0] - 2014-10-17 - dual algorithm thoroughly revised - internal parallelization of simplicial cones with large determinants - improvement of linear algebra ## [2.11.2] - 2014 - improvement of intermediate reduction - bug fix ## [2.11.1] - 2014 - bug fix ## [2.11.0] - 2014-04-30 - addition of inhomogeneous input possibilities - Hilbert series of semiopen cones. - integral approximation of rational polytopes. - lattice points in polytopes via the dual algorithm. - improvement in Fourier-Motzkin elimination by better use of pyramid decomposition. - substantial improvement in computing ``large'' simplicial cones. ## [2.10.1] - 2013-06-27 - bug fix (wrong multiplicity in computation mode -v (volume) for some non-integral polytopes) ## [2.10.0] - 2013-05-13 - now avoids the production of duplicates of candidates for the Hilbert basis - improvement of NmzIntegrate - corrections in the output forwarded to NmzIntegrate
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