The PARI/GP project started around 1985 in the Laboratoire A2X (Universite Bordeaux 1, France) and a first version was written by Christian Batut, Dominique Bernardi, Henri Cohen and Michel Olivier and maintained by Henri Cohen till 1995. Karim Belabas took over the maintainance between 1995 and 2001, the project has been jointly maintained by Bill Allombert and Karim Belabas since 2002. A great number of people have contributed code or data through the many stages which eventually resulted in the present version of PARI/GP. Even more people, too numerous to list, contributed by testing, reporting bugs or suggesting improvements, Igor Schein foremost among them. We would like to thank them all here. Current lead developers: Bill ALLOMBERT (Bordeaux) Karim BELABAS (Bordeaux) Major contributors (large modules written or rewritten from scratch): Bill ALLOMBERT: GP2C, the GP parser, extension of the GP language (my, closures), GMP kernel, modular kernel, ffinit, galois* routines, subcyclo, black-box groups, elliptic curves, multithread model, PARI description system, FLTK support, Bug tracking system, administration of pari.math.u-bordeaux.fr, the http://pari.math.u-bordeaux.fr website, finite fields, Lfun module, ratpoints port, ellrank port, fplll port. Jared ASUNCION: ECPP Christian BATUT: 68k multiprecision kernel, Linear algebra, lattices Karim BELABAS: current project leader, native multiprecision kernel, modular kernel, polynomial arithmetic, polynomial factorization (finite fields, number fields), LLL, primality and compositeness tests, number fields, polgalois, elliptic curves, qfsolve, transcendental functions, install(), extension of the GP language (next/break/return, local, op=, default()), gphelp, gphtml fork, Configure, readline, man pages, documentation layout, reference card and user's manuals, the FAQ, the http://pari.math.u-bordeaux.fr website, Lfun module, ModularForms module, nflist, HGM package. Dominique BERNARDI: the original gp interpreter, ECM, original elliptic curves implementation Peter BRUIN: asymptotically fast linear algebra over finite fields Henri COHEN: original designer and project leader, native multiprecision kernel, arithmetic functions, LLL, transcendental functions, number fields, original elliptic curves implementation, numerical integration and summation, Lfun module, ModularForms module, nflist, HGM package. Vincent DELECROIX: combinatorial algorithms (forperm, forsubset) Jeroen DEMEYER: SVG support Francisco DIAZ Y DIAZ: number fields (class groups, units) Yves EICHENLAUB: original polgalois implementation Takashi FUKUDA: the subcyclopclgp module, znsubgroupgenerators Xavier GOURDON: polroots, initial Karatsuba/Toom Cook/fft implementations Louis GRANBOULAN: breakup of monolithic PARI into modules, first GMP kernel, first Configure Loic GRENIE: bnfinit() rewrite, openMP / MPI implementations, polrootsreal/polsturm Bruno HAIBLE: micro assembly implementations, DOS/Windows support Guillaume HANROT: thue, zncoppersmith, initial polrootsreal implementation Hamish IVEY-LAW: ellisogeny, ellisogenyapply, ellissupersingular, Sutherland algorithms for class and modular polynomials (polclass, polmodular), Flj_ functions family. Pascal LETARD: basic number fields (round2, initial round4) Jean-Francois MESTRE: original elliptic curves implementation Pascal MOLIN: Lfun module, numerical integration, Hecke characters Gerhard NIKLASCH: binary powering, integer extended gcd and rational reconstruction, primality and compositeness test, integer factorization, documentation layout, AIX and Solaris support, first PARI web site. Michel OLIVIER: 68k multiprecision kernel, number fields, original polgalois and nfsubfields implementation Aurel PAGE: Associative and central simple algebras module, linear algebra over Z/NZ, Hecke characters Thomas PAPANIKOlAOU: MPQS integration, Pari-Lidia project Xavier ROBLOT: MPQS integration, Stark, original nffactor, padicfields Denis SIMON: Norm equations, S-units, Hilbert symbols, original qfsolve implementation, original ellrank implementation Nils SKORUPPA: gphtml script, Qt graphics driver Michael STOLL: original 'ratpoints' code Emmanuel TOLLIS: primedec, zetak Ilya ZAKHAREVITCH: prime sieves, gphelp, tex2mail, rewrite of the graphic engine (incl. splines and clipping), GP parser codes, gnuplot support, readline support, OS/2 support, DOS/EMX support All packages built by Bill ALLOMBERT and Karim BELABAS. Package contributors: John CREMONA: elldata (https://johncremona.github.io/ecdata/) Tim DOKCHITSER: nflistdata (regular extensions of Q(t)) David KOHEL: seadata (https://www.i2m.univ-amu.fr/perso/david.kohel/dbs/) Bill ALLOMBERT and Igor SCHEIN built the galpol contents Yves EICHENLAUB contributed the galdata contents John JONES and David ROBERTS: nflistdata (A5 fields, https://hobbes.la.asu.edu/NFDB/) Juergen KLUENERS and Gunter MALLE: nflistdata (regular extensions of Q(t), see G. Malle and B. H. Matzat, Inverse Galois Theory, Springer, 1999) Other contributors: the 2 or 3 letter code refer to the CHANGES file. Please, kindly remind us if you have been forgotten! = Karim Belabas (maintainer) AE = Andreas Enge AF = Aurimas Fiseras AM = Alex V. Myltsev AMe= Anton Mellit AP = Aurel Page AS = Andy Stubbs AW = Aleksander Wittlin BA = Bill Allombert BD = Bill Daly BG = Brian Gladman BH = Bruno Haible BK = Bruce Kaskel BP = Bernadette Perrin-Riou CB = Cliff Bergman CG = Charles Greathouse CW = Carl Witty DB = Dominique Bernardi DCa= David Carlisle DC = Dan Christensen DE = Denis Excoffier DF = David Ford DJ = Dana Jacobsen DS = Denis Simon EB = Erik Bray ED = Eric Driver EP = Esa Peuha FB = Francois Bissey GH = Guillaume Hanrot GN = Gerhard Niklasch GT = Glenn Thobe GTo= Gonzalo Tornaria HC = Henri Cohen HIL= Hamish Ivey-Law HR = Harvey Rose IK = Iwao Kimura IM = Ivan Middleton IS = Igor Schein ISo= Ignat Soroko IZ = Ilya Zakharevich JA = Jared Asuncion JD = Jeroen Demeyer JJ = John Jones JK = Julien Keuffer JM = Jerome Milan JR = Jerome Raulin JS = Juhana Sadeharju KO = Kiyoshi Ohgishi KPN= Klaus-Peter Nischke KR = Kevin Ryde LG = Louis Granboulan LGr= Loic Grenie LM = Lorenz Minder MA = Michael Abshoff MC = Marie-Angela Cornelie MD = Mark Dickinson MH = Marije Huizing MS = Michael Stoll MSo= Michael Somos MW = Mark Watkins NM = Nicolas Mascot NS = Nils Skoruppa OB = Oliver Bandel OR = Olivier Ramare OV = Oliver Voigt PB = Peter Bruin PC = Phil Carmody PM = Peter Montgomery PMo= Pascal Molin PW = Paul van Wamelen RB = Remi Butel RM = Richard J. Mathar RS = Ralf Stephan RR = Randall Rathbun SC = Sylvain Chevillard SCh= Steven Charlton SG = Scott Garee TF = Takashi Fukuda TH = Teluhiko Hilano TP = Thomas Papanikolaou VB = Vasili Burdo VBr= Volker Braun VD = Vincent Delecroix VL = Vincent Lefevre XR = Xavier Roblot YU = Yoshiaki Uchikawa WH = William Hart