Above image created with the old float version of Fermat.

The latest versions of Fermat can now run on Windows, thanks to the efforts of Bogdan Radu. Windows 10 introduced a new feature, named WSL (or the Windows Subsystem for Linux), which allows a user to natively run Linux applications within a Windows environment. See the instructions available here written by Bogdan Radu. May 2021.

Release of Fermat Source Code. The source code for version 6.21 was released under GNU GPL in August 2018. If you are interested in having a copy, and have not done so recently, email me.

Update: The source code for version 6.37 was released under GNU GPL in June 2020.

The manual for the 64 bit Linux and Mac versions has been updated. April 2021.

New 64 bit Fermat 6.5, with vastly improved multivariate polynomial gcd ever since 6.0. June 25, 2021.

Compare Your Computer Algebra System. Take the Fermat Tests! September 2015.

   Fermat is freeware. Those who have grant money are requested to contribute $70 per installed machine.

   Fermat Linux as a C Library. revised January 13, 2020

   ball 64 bit Versions of Fermat, Version 5.25 July 5, 2016

   ball Mac OS X Intel Version of Fermat Available, 32 bit. 3.9.9x, revised July 5, 2016

   ball Float Versions of Fermat Now Available. April 22, 2015

   ball Mac OS X G3-G5 Version of Fermat Available. 3.9.9x, revised October 8, 2010, for old G3-G5 Macs.

   ball Linux Version of Fermat. 3.9.9x, revised July 5, 2016

   ball New Windows Version of Fermat. 3.9.9x, March 28, 2013

   ball Unix Version of Fermat Available. 3.6.9, revised December 15, 2005

   ball Old Obsolete Windows Version of Fermat. 3.6.9, revised October 29, 2007

   ball Mac OS 9 Version of Fermat Available. 3.7.0, revised October 29, 2007

   ball Source Code for Old Windows Version Available. April 17, 2010

   ball Source Code for FFermat Now Available. January 19, 2009

   ball Fermat Very Impressive in Comparison of Computer Algebra Systems

   ball HTML and PDF Versions of the Manuals:

Revised PDF and HTML Manuals for Linux,Windows, and OS X. March 30, 2021, small revisions April and June 2016, March 2020.

   ball Fermat FAQ frequently asked questions.

  Here is a documented collection of functions that implement the Dixon-EDF method for solving systems of polynomial equations in Fermat.    H. Chawdhry, M. Lim, A. Mitov. Two-loop five-point massless QCD amplitudes within the integration-by-parts approach. PHYSICAL REVIEW D99,076011 (2019)
   A. Neumann, Z. Sullivan. Off-shell single-top-quark production in the Standard Model Effective Field Theory. Journal of High Energy Physics volume 2019, Article number: 22 (2019)
  J. Bohm, A. Georgoudis, K. J. Larsen, H. Schonemann, and Y. Zhang. Complete integration-by-parts reductions of the non-planar hexagon-box via module intersections. Journal of High Energy Physics 2018. ArXiv ePrint: 1805.01873
  Samuel Abreu, Ben Page and Mao Zeng. Differential equations from unitarity cuts: nonplanar hexa-box integrals. Journal of High Energy Physics 2019. DOI: 10.1007/JHEP01(2019)006.
   Jonas Klappert and Fabian Lange. Reconstructing Rational Functions with FireFly. arXiv:1904.00009v2 [cs.SC] Oct. 2019.
   A. Behring, J. Blumlein, A. De Freitas, A. Goedicke, S. Klein, A. von Manteuffel, C. Schneider, K. Schonwald. The Polarized Three-Loop Anomalous Dimensions from On-Shell Massive Operator Matrix Elements. arXiv:1908.03779 [hep-ph] Aug. 2019.
   V. Hirschi, S. Lionetti, and A. Schweitzer. One-loop weak corrections to Higgs production. arXiv:1902.10167 [hep-ph] Feb. 2019.
   Patrick Dukes and Joe Rusinko. Commutation Classes of Double Wiring Diagrams. arXiv:1006.1076v1.pdf. June 2010. Also see: Involve: A Journal of Mathematics, V. 5, 2 (2012), 207 - 218.
   R. Angeles-Mart́inez, M. Czakon and S. Sapeta. NNLO soft function for top quark pair production at small transverse momentum. arxiv.org/pdf/1809.01459.pdf. Nov. 2018.
  L. Almeida, C. Sturm. Two-loop matching factors for light quark masses and three-loop mass anomalous dimensions in the RI/SMOM schemes. arXiv:1004.4613v2 [hep-ph] 2011.
  L. Almeida, C. Sturm. Two-loop matching factors for light quark masses and three-loop mass anomalous dimensions in the regularization invariant symmetric momentum-subtraction schemes. PHYSICAL REVIEW D 82, 054017 (2010)

Revised Manual for Linux and OSX. June 25, 2021

ball Suggested donation $70, using PayPal. (You don't have to have a PayPal account.)