About

SymPy Development Team

SymPy is a team project and it was developed by a lot of people.

Here is a list of contributors together with what they do, (and in some cases links to their wiki pages), where they describe in more details what they do and what they are interested in (some people didn’t want to be mentioned here, so see our repository history for a full list).

1. Ondřej Čertík: started the project in 2006, on Jan 4, 2011 passed the project leadership to Aaron Meurer
2. Fabian Pedregosa: everything, reviewing patches, releases, general advice (issues and mailinglist), GSoC 2009
3. Jurjen N.E. Bos: pretty printing and other patches
4. Mateusz Paprocki: GSoC 2007, concrete math module, integration module, new core integration, a lot of patches, general advice, new polynomial module, improvements to solvers, simplifications, patch review
5. Marc-Etienne M.Leveille: matrix patch
6. Brian Jorgensen: GSoC 2007, plotting module and related things, patches
7. Jason Gedge: GSoC 2007, geometry module, a lot of patches and fixes, new core integration
8. Robert Schwarz: GSoC 2007, polynomials module, patches
9. Pearu Peterson: new core, sympycore project, general advice (issues and mailinglist)
10. Fredrik Johansson: mpmath project and its integration in SymPy, number theory, combinatorial functions, products & summation, statistics, units, patches, documentation, general advice (issues and mailinglist)
11. Chris Wu: GSoC 2007, linear algebra module
12. Ulrich Hecht: pattern matching and other patches
13. Goutham Lakshminarayan: number theory functions
14. David Lawrence: GHOP, Mathematica parser, square root denesting
15. Jaroslaw Tworek: GHOP, sympify AST implementation, sqrt() refactoring, maxima parser and other patches
16. David Marek: GHOP, derivative evaluation patch, int(NumberSymbol) fix
17. Bernhard R. Link: documentation patch
18. Andrej Tokarčík: GHOP, python printer
19. Or Dvory: GHOP, documentation
20. Saroj Adhikari: bug fixes
21. Pauli Virtanen: bug fix
22. Robert Kern: bug fix, common subexpression elimination
23. James Aspnes: bug fixes
24. Nimish Telang: multivariate lambdas
25. Abderrahim Kitouni: pretty printing + complex expansion bug fixes
26. Pan Peng: ode solvers patch
27. Friedrich Hagedorn: many bug fixes, refactorings and new features added
28. Elrond der Elbenfuerst: pretty printing fix
29. Rizgar Mella: BBP formula for pi calculating algorithm
30. Felix Kaiser: documentation + whitespace testing patches
31. Roberto Nobrega: several pretty printing patches
32. David Roberts: latex printing patches
33. Sebastian Krämer: implemented lambdify/numpy/mpmath cooperation, bug fixes, refactoring, lambdifying of matrices, large printing refactoring and bugfixes
34. Vinzent Steinberg: docstring patches, a lot of bug fixes, nsolve (nonlinear equation systems solver), compiling functions to machine code, patches review
35. Riccardo Gori: improvements and speedups to matrices, many bug fixes
36. Case Van Horsen: implemented optional support for gmpy in mpmath
37. Štěpán Roučka: a lot of bug fixes all over SymPy (matrix, simplification, limits, series, ...)
38. Ali Raza Syed: pretty printing/isympy on windows fix
39. Stefano Maggiolo: many bug fixes, polishings and improvements
40. Robert Cimrman: matrix patches
41. Bastian Weber: latex printing patches
42. Sebastian Krause: match patches
43. Sebastian Kreft: latex printing patches, Dirac delta function, other fixes
44. Dan (coolg49964): documentation fixes
45. Alan Bromborsky: geometric algebra modules
46. Boris Timokhin: matrix fixes
47. Robert (average.programmer): initial piecewise function patch
48. Andy R. Terrel: piecewise function polishing and other patches
49. Hubert Tsang: LaTeX printing fixes
50. Konrad Meyer: policy patch
51. Henrik Johansson: matrix zero finder patch
52. Priit Laes: line integrals, cleanups in ODE, tests added
53. Freddie Witherden: trigonometric simplifications fixes, LaTeX printer improvements
54. Brian E. Granger: second quantization physics module
55. Andrew Straw: lambdify() improvements
56. Kaifeng Zhu: factorint() fix
57. Ted Horst: Basic.__call__() fix, pretty printing fix
58. Andrew Docherty: Fix to series
59. Akshay Srinivasan: printing fix, improvements to integration
60. Aaron Meurer: ODE solvers (GSoC 2009), The Risch Algorithm for integration (GSoC 2010), other fixes, project leader as of Jan 4, 2011
61. Barry Wardell: implement series as function, several tests added
62. Tomasz Buchert: ccode printing fixes, code quality concerning exceptions, documentation
63. Vinay Kumar: polygamma tests
64. Johann Cohen-Tanugi: commutative diff tests
65. Jochen Voss: a test for the @cachit decorator and several other fixes
66. Luke Peterson: improve solve() to handle Derivatives
67. Chris Smith: improvements to solvers, many bug fixes, documentation and test improvements
68. Thomas Sidoti: MathML printer improvements
69. Florian Mickler: reimplementation of convex_hull, several geometry module fixes
70. Nicolas Pourcelot: Infinity comparison fixes, latex fixes
71. Ben Goodrich: Matrix.jacobian() function improvements and fixes
72. Toon Verstraelen: code generation module, latex printing improvements
73. Ronan Lamy: test coverage script; limit, expansion and other fixes and improvements; cleanup
74. James Abbatiello: fixes tests on windows
75. Ryan Krauss: fixes could_extract_minus_sign(), latex fixes and improvements
76. Bill Flynn: substitution fixes
77. Kevin Goodsell: Fix to Integer/Rational
78. Jorn Baayen: improvements to piecewise functions and latex printing, bug fixes
79. Eh Tan: improve trigonometric simplification
80. Renato Coutinho: derivative improvements
81. Oscar Benjamin: latex printer fix, gcd bug fix
82. Øyvind Jensen: implemented coupled cluster expansion and wick theorem, improvements to assumptions, bugfixes
83. Julio Idichekop Filho: indentation fixes, docstring improvements
84. Łukasz Pankowski: fix matrix multiplication with numpy scalars
85. Chu-Ching Huang: fix 3d plotting example
86. Fernando Perez: symarray() implemented
87. Raffaele De Feo: fix non-commutative expansion
88. Christian Muise: fixes to logic module
89. Matt Curry: GSoC 2010 project (symbolic quantum mechanics)
90. Kazuo Thow: cleanup pretty printing tests
91. Christian Schubert: Fix to sympify()
92. Jezreel Ng: fix hyperbolic functions rewrite
93. James Pearson: Py3k related fixes
94. Matthew Brett: fixes to lambdify
95. Addison Cugini: GSoC 2010 project (quantum computing)
96. Nicholas J.S. Kinar: improved documentation about “Immutability of Expressions”
97. Harold Erbin: Geometry related work
98. Thomas Dixon: fix a limit bug
99. Cristóvão Sousa: implements _sage_ method for sign function.
100. Andre de Fortier Smit: doctests in matrices improved
101. Mark Dewing: Fixes to Integral/Sum, MathML work
102. Alexey U. Gudchenko: various work in matrices
103. Gary Kerr: fix examples, docs
104. Sherjil Ozair: fixes to SparseMatrix
105. Oleksandr Gituliar: fixes to Matrix
106. Sean Vig: Quantum improvement
107. Prafullkumar P. Tale: fixed plotting documentation
108. Vladimir Perić: fix some Python 3 issues
109. Tom Bachmann: fixes to Real
110. Yuri Karadzhov: improvements to hyperbolic identities
111. Vladimir Lagunov: improvements to the geometry module
112. Matthew Rocklin: stats, sets, matrix expressions
113. Saptarshi Mandal: Test for an integral
114. Gilbert Gede: Tests for solvers
115. Anatolii Koval: Infinite 1D box example
116. Tomo Lazovich: fixes to quantum operators
117. Pavel Fedotov: fix to is_number
118. Kibeom Kim: fixes to cse function and preorder_traversal
119. Gregory Ksionda: fixes to Integral instantiation
120. Tomáš Bambas: prettier printing of examples
121. Jeremias Yehdegho: fixes to the nthoery module
122. Jack McCaffery: fixes to asin and acos
123. Raymond Wong: Quantum work
124. Luca Weihs: improvements to the geometry module
125. Shai ‘Deshe’ Wyborski: fix to numeric evaluation of hypergeometric sums
126. Thomas Wiecki: Fix Sum.diff
127. Óscar Nájera: better Laguerre polynomial generator
128. Mario Pernici: faster algorithm for computing Groebner bases
129. Benjamin McDonald: Fix bug in geometry
130. Sam Magura: Improvements to Plot.saveimage
131. Stefan Krastanov: Make Pyglet an external dependency
132. Bradley Froehle: Fix shell command to generate modules in setup.py
133. Min Ragan-Kelley: Fix isympy to work with IPython 0.11
134. Nikhil Sarda: Fix to combinatorics/prufer
135. Emma Hogan: Fixes to the documentation
136. Jason Moore: Fixes to the mechanics module
137. Julien Rioux: Fix behavior of some deprecated methods
138. Roberto Colistete, Jr.: Add num_columns option to the pretty printer
139. Raoul Bourquin: Implement Euler numbers
140. Gert-Ludwig Ingold: Correct derivative of coth
141. Srinivas Vasudevan: Implementation of Catalan numbers
142. Miha Marolt: Add numpydoc extension to the Sphinx docs, fix ode_order
143. Tim Lahey: Rotation matrices
144. Luis Garcia: update examples in symarry
145. Matt Rajca: Code quality fixes
146. David Li: Documentation fixes
147. David Ju: Increase test coverage, fixes to KroneckerDelta
148. Alexandr Gudulin: Code quality fixes
149. Bilal Akhtar: isympy man page
150. Grzegorz Świrski: Fix to latex(), MacPorts portfile
151. Matt Habel: SymPy-wide pyflakes editing
152. Nikolay Lazarov: Translation of the tutorial to Bulgarian
153. Nichita Utiu: Add pretty printing to Product()
154. Tristan Hume: Fixes to test_lambdify.py
155. Imran Ahmed Manzoor: Fixes to the test runner
156. Steve Anton: pyflakes cleanup of various modules, documentation fixes for logic
157. Sam Sleight: Fixes to geometry documentation
158. tsmars15: Fixes to code quality
159. Chancellor Arkantos: Fixes to the logo
160. Stepan Simsa: Translation of the tutorial to Czech
161. Tobias Lenz: Unicode pretty printer for Sum
162. Siddhanathan Shanmugam: Documentation fixes for the Physics module
163. Tiffany Zhu: Improved the latex() docstring
164. Alexey Subach: Translation of the tutorial to Russian
165. Joan Creus: Improvements to the test runner
166. Geoffry Song: Improve code coverage
167. Puneeth Chaganti: Fix for the tutorial
168. Marcin Kostrzewa: SymPy Cheatsheet
169. Jim Zhang: Fixes to AUTHORS and .mailmap
170. Natalia Nawara: Fixes to Product()
171. vishal: Update the Czech tutorial translation to use a .po file
172. Shruti Mangipudi: added See Also documentation to Matrices
173. Davy Mao: Documentation
174. Swapnil Agarwal: added See Also documentation to ntheory, functions
175. Kendhia: Add XFAIL tests
176. jerryma1121: See Also documentation for geometry
177. Joachim Durchholz: Improvements to the software infrastructure
178. Martin Povišer: fix problem with rationaltools
179. Siddhant Jain: See Also documentation for functions/special
180. Kevin Hunter: Improvements to the inequality classes
181. Michael Mayorov: Improvement to series
182. Nathan Alison: Additions to the stats module
183. Christian Bühler: remove use of set_main() in GA
184. Carsten Knoll: improvement to preview()
185. M R Bharath: modified use of int_tested, improvement to Permutation
186. Matthias Toews: File permissions
187. Sergiu Ivanov: Fixes to zoo, SymPyDeprecationWarning
188. Jorge E. Cardona: Cleanup in polys
189. Sanket Agarwal: Rewrite coverage_doctest.py script
190. Manoj Babu K.: Improve gamma function
191. Sai Nikhil: Fix to Heavyside with complex arguments
192. Aleksandar Makelov: Fixes regarding the dihedral group generator
193. Raphael Michel: German translation of the tutorial
194. Sachin Irukula: Changes to allow Dict sorting
195. Ashwini Oruganti: Changes to Pow printing
196. Andreas Kloeckner: Fix to cse()
197. Prateek Papriwal: improve summation documentation
198. Arpit Goyal: Improvements to Integral and Sum
199. Angadh Nanjangud: in physics.mechanics, added a function and tests for the parallel axis theorem
200. Comer Duncan: added dual, is_antisymmetric, and det_lu_decomposition to matrices.py
201. Jens H. Nielsen: added sets to modules listing, update IPython printing extension
202. Joseph Dougherty: modified whitespace cleaning to remove multiple newlines at eof
203. marshall2389: Spelling correction
204. Guru Devanla: Implemented quantum density operator
205. George Waksman: Implemented JavaScript code printer and MathML printer
206. Angus Griffith: Fix bug in rsolve
207. Timothy Reluga: Rewrite trigonometric functions as rationals
208. Brian Stephanik: Test for a bug in fcode
209. Ljubiša Moćić: Serbian translation of the tutorial
210. Piotr Korgul: Polish translation of the tutorial
211. Rom le Clair: French translation of the tutorial
212. Alexandr Popov: Fixes to Pauli algebra
213. Saurabh Jha: Work on Kauers algorithm
214. Tarun Gaba: Implemented some trigonometric integrals
215. Takafumi Arakaki: Add info target to the doc Makefile
216. Alexander Eberspächer: correct typo in aboutus.rst
217. Sachin Joglekar: Simplification of logic expressions to SOP and POS forms
218. Tyler Pirtle: Fix improperly formatted error message
219. Vasily Povalyaev: Fix latex(Min)
220. Colleen Lee: replace uses of fnan with S.NaN
221. Niklas Thörne: Fix links in the docs
222. Huijun Mai: Chinese translation of the tutorial
223. Marek Šuppa: Improvements to symbols, tests
224. Prasoon Shukla: Bug fixes
225. Stefen Yin: Fixes to the mechanics module
226. Thomas Hisch: Improvements to the printing module
227. Matthew Hoff: Addition to quantum module
228. Madeleine Ball: Bug fix
229. Case Van Horsen: Fixes to gmpy support
230. Mary Clark: Improvements to the group theory module
231. Rishabh Dixit: Bug fixes
232. Acebulf: Typos
233. Manoj Kumar: Bug fix
234. Akshit Agarwal: improvements to range handling in symbols
235. CJ Carey: Fix for limits of factorials
236. Patrick Lacasse: Fix for Piecewise.subs
237. Ananya H: Bug fix
238. Tarang Patel: added test for issue 4739
239. Christopher Dembia: improvements to mecahanics documentation
240. Benjamin Fishbein: added rank method to Matrix
241. Sean Ge: made KroneckerDelta arguments canonically ordered
242. Ankit Agrawal: Statistical moments
243. Amit Jamadagni: qapply Rotation to spin states
244. Björn Dahlgren: Implemented finite difference module, minor fixes
245. Christophe Saint-Jean: fixed and added metrics to galgebra
246. Demian Wassermann: fix to ccode printer for Piecewise
247. Khagesh Patel: Addition to matrix expressions
248. Stephen Loo: Update minimum gmpy2 version
249. hm: Fixes to printing
250. Katja Sophie Hotz: use expansion in minpoly
251. Varun Joshi: Addition to functions
252. Chetna Gupta: Improvements to the Risch integration algorithm
253. Thilina Rathnayake: Fix to the matrices
254. Shravas K Rao: Implement prev_lexicographic and next_lexicographic
255. Max Hutchinson: Fix to HadamardProduct
256. Matthew Tadd: fix definition in units module
257. Alexander Hirzel: Updates to ODE docs
258. Randy Heydon: improve collinear point detection
259. Ramana Venkata: improvements to special functions
260. Oliver Lee: improvements to mechanics
261. Seshagiri Prabhu: hardcoded 3x3 determinant
262. Pradyumna: Fix to printing
263. Erik Welch: Fix a warning
264. Eric Nelson: Fixes to printing
265. Roland Puntaier: Improve App Engine support
266. Chris Conley: Use warnings instead of prints
267. Tim Swast: Help with pull requests and IPython
268. Dmitry Batkovich: Fix to series
269. Francesco Bonazzi: Improvements to matrices and tensors
270. Yuriy Demidov: Add examples from “Review of CAS mathematical capabilities”
271. Rick Muller: Implementation of quantum circuit plotting
272. Manish Gill: Fix infinite loop in Matrix constructor
273. Markus Müller: Add Jordan form for matrices
274. Amit Saha: Fixes to documentation
275. Jeremy: Bug fix
276. QuaBoo: Optimizations in ntheory
277. Stefan van der Walt: Fixes to mechanics module
278. David Joyner: Cryptography module
279. Lars Buitinck: Bug fix
280. Alkiviadis G. Akritas: Add a reference
281. Vinit Ravishankar: fix iterables documentation
282. Mike Boyle: Additions to the printing system
283. Heiner Kirchhoffer: PythonRational int conversion fix
284. Pablo Puente: Test cases from Wester paper
285. James Fiedler: Bug fix
286. Harsh Gupta: Bug fix
287. Tuomas Airaksinen: is_real for besselx
288. rathmann: fix some Python 2/3 issues
289. Paul Strickland: documentation fix
290. James Goppert: correct code in form_lagranges_equations
291. Avichal Dayal: removed duplicate solutions obtained from solve
292. Paul Scott: pass along keywords for plots
293. shiprabanga: code quality fixes
294. Pramod Ch: fix problem with (I*oo).expand_complex()
295. Akshay: added normal_lines to Ellipse
296. Buck Shlegeris: add inverses to error functions
297. Jonathan Miller: documentation
298. Edward: update license year
299. Rajath S: corrected iteration values in gaunt, racah, and wigner_9j
300. Aditya Shah: bug fix, improvement to parsers
301. Sambuddha Basu: documentation fix
302. Zeel Shah: fixes to logic module
303. Abhinav Chanda: wigner_3j and clebsch_gordan fixes
304. Jim Crist: lambdify improvments
305. Sudhanshu Mishra: Added tests for racah() of sympy.physics.wigner module
306. Rajat Aggarwal: improvements to integration module
307. Soumya Dipta Biswas: Add support for Equivalent with multiple arguments
308. Anurag Sharma: improvements to Risch algorithm
309. Sushant Hiray: taylor_term for sec
310. Ben Lucato: documentation fixes
311. Kunal Arora: documentation fixes
312. Henry Gebhardt: bugfix to ufuncify
313. Dammina Sahabandu: implemented continued fractions functions
314. Shukla: particle on a ring functions
315. Ralph Bean: typo
316. richierichrawr: documentation fixes
317. John Connor: fixes to ntheory
318. Juan Luis Cano Rodríguez: fixes to mechanics module
319. Sahil Shekhawat: fixes to core
320. Kundan Kumar: fixes to ODE identification of separable_reduced
321. Stas Kelvich: fixes to quantum module
322. sevaader: fix to assumptions
323. Dhruvesh Vijay Parikh: implement Möbius function
324. Venkatesh Halli: improvement to matrices
325. Lennart Fricke: make sure that cse avoids symbol collision
326. Vlad Seghete: fix an issue with autowrap
327. shashank-agg: ensure that the range is correct for multiple plots
328. carstimon: make Abs(polar_lift(arg)) -> abs(arg)
329. Pierre Haessig: fix typos
330. Maciej Baranski: refactor code in compilef
331. Zamrath Nizam: replace atoms(Symbol) with free_symbols where appropriate
332. Benjamin Gudehus: add sampling_density to stats
333. Faisal Anees: Egyptian Fractions
334. Robert Johansson: quantum field operators
335. Kalevi Suominen: fix to assumptions
336. Kaushik Varanasi: fix a typo
337. Fawaz Alazemi: combinatorics cheat sheet
338. Ambar Mehrotra: Fix to documentation
339. Mark Shoulson: Enhanced Egyptian fractions
340. David P. Sanders: Fix to latex printer
341. Peter Brady: avoid caching problem by using function instead of lambda
342. John V. Siratt: Fix to documentation
343. Sarwar Chahal: Fix to documentation
344. Nathan Woods: Fix to C code printer
345. Colin B. Macdonald: Fix to documentation
346. Marcus Näslund: Fix to documentation
347. Clemens Novak: improved docstring for apart
348. Craig A. Stoudt: correct addition of TWave objects
349. Mridul Seth: correct is_tangent for Ellipse non-intersection
350. Raj: fixed typos in four files
351. Mihai A. Ionescu: Improvement to LaplaceTransform
352. immerrr: add check of SYMPY_DEBUG value
353. Leonid Blouvshtein: make integrals aware of both limits being +/-oo
354. Peleg Michaeli: implement the Rademacher distribution
355. Chai Wah Wu: Implement divisor_sigma function
356. ck Lux: handle zoo, oo, nan in as_int and round
357. zsc347: fixed a bug in crypto.rsa_private_key
358. Hamish Dickson: improve qubit tests
359. Michael Gallaspy: improve handling of inequalities involving RootOf
360. Roman Inflianskas: add svg support to preview
361. Duane Nykamp: improved function handling in parse_expr
362. Ted Dokos: implemented interleaving for unions
363. Sunny Aggarwal: fix Integral.transform method
364. Akshat Jain: nsimplify returns ints quickly
365. Shivam Vats: Added ReciprocalHyperbolicFunction class and misc bug fixes
366. Cody Herbst: modified Euler-MacLaurin to not exit when term == 0
367. AMiT Kumar: Improvements to the equation solvers
368. Nishith Shah: fix solving of Piecewise functions
369. Guillaume Gay: bugfix for LagrangesMethod
370. Ray Cathcart: improve error handling in _random
371. Mihir Wadwekar: watch for duplicate bases in powsimp
372. Tuan Manh Lai: correct SparseMatrix.is_Identity property
373. Darshan Chaudhary: cross platform support in setup.py options
374. Alec Kalinin: fixed simplify and expand_log so base of log is not dropped
375. Aaditya Nair: import fix
376. Jayesh Lahori: remove uses of xrange
377. harshil goel: simplify roots by removing some powers from radicals
378. Lokesh Sharma: reorder setup.py file imports to correct NameError
379. Sartaj Singh: use left | instead of lvert for latex Abs
380. Chris Swierczewski: RootOf.evalf watches for root on interval boundary
381. Sumith: implemented columnspace of a matrix
382. Konstantin Togoi: added truth_table and binary digit utilities to boolalg
383. Param Singh: added missing units from mks system
384. Philippe Bouafia: Fixed a typo.
385. Lucas Jones: Add a test in integrals
386. Peter Schmidt: Removed duplicate tests
387. Jiaxing Liang: Fix infinite recursion issue in test_f
388. Juha Remes: Fixed a typo in qubit_to_matrix documentation
389. Gregory Ashton: Fix dsolve to allow symbols in systems of equations
390. Renato Orsino: Add \(applyfunc\) to Dyadic and Vector
391. Jennifer White: Added checks into polynomials.py
392. Alistair Lynn: Removed duplicate classifiers list in setup.py
393. Govind Sahai: Fixed some typos
394. Adam Bloomston: Improve conversion of Decimal to Float
395. Kyle McDaniel: Fixes to Point3D
396. Nguyen Truong Duy: Fix a bug in cancelling MatrixElement expressions
397. Alex Lindsay: Fix typos in documentation
398. Mathew Chong: Improve Mul handling of positive/negative assumptions.
399. Gaurav Dhingra: M.row_del(index) and M.col_del(index) raise IndexError for out of bound Index
400. Kevin Ventullo: Fix some problems with matrix expressions
401. Longqi Wang: Fix for plotting of piecewise functions
402. Isuru Fernando: Use docker for travis testing
403. Shivam Tyagi: solveset_complex(0, x) now returns S.Complex
404. Rich LaSota: Removed redundant doctest in polys
405. Anton Akhmerov: fixed the zero matrix printing
406. Richard Otis: Improved lambdify support for numpy
407. Michael Zingale: add a left_eigenvectors() method
408. Kumar Krishna Agrawal: UnXFAIL tests in solveset
409. Dustin Gadal: Replace linear diophantine solver to resolve issue #9539

Up-to-date list in the order of the first contribution is given in the AUTHORS file.

You can find a brief history of SymPy in the README.

Financial and Infrastructure Support

• Google: SymPy has received generous financial support from Google in various years through the Google Summer of Code program by providing stipends:
  • in 2007 for 5 students (GSoC 2007)
  • in 2008 for 1 student (GSoC 2008)
  • in 2009 for 5 students (GSoC 2009)
  • in 2010 for 5 students (GSoC 2010)
  • in 2011 for 9 students (GSoC 2011)
  • in 2012 for 6 students (GSoC 2012)
  • in 2013 for 7 students (GSoC 2013)
  • in 2014 for 10 students (GSoC 2014)
• Python Software Foundation (PSF) has hosted various GSoC students over the years:
  • 3 GSoC 2007 students (Brian, Robert and Jason)
  • 1 GSoC 2008 student (Fredrik)
  • 2 GSoC 2009 students (Freddie and Priit)
  • 4 GSoC 2010 students (Aaron, Christian, Matthew and Øyvind)
• Portland State University (PSU) has hosted following GSoC students:
  • 1 student (Chris) in 2007
  • 3 students (Aaron, Dale and Fabian) in 2009
  • 1 student (Addison) in 2010
• The Space Telescope Science Institute: STScI hosted 1 GSoC 2007 student (Mateusz)
• Several 13-17 year old pre-university students contributed as part of Google’s Code-In 2011. (GCI 2011)
• Simula Research Laboratory: supports Pearu Peterson work in SymPy/SymPy Core projects
• GitHub is providing us with development and collaboration tools

License

Unless stated otherwise, all files in the SymPy project, SymPy’s webpage (and wiki), all images and all documentation including this User’s Guide are licensed using the new BSD license:

Copyright (c) 2006-2015 SymPy Development Team

All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  a. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.
  b. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.
  c. Neither the name of SymPy nor the names of its contributors
     may be used to endorse or promote products derived from this software
     without specific prior written permission.


THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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