%0 Journal Article %T Modular Forms in Pari/GP %+ Institut de Mathématiques de Bordeaux (IMB) %+ Lithe and fast algorithmic number theory (LFANT) %A Belabas, Karim %A Cohen, Henri %< avec comité de lecture %@ 2522-0144 %J Research in the Mathematical Sciences %I Springer %8 2018 %D 2018 %Z 1810.00547 %Z Mathematics [math]/Number Theory [math.NT]Journal articles %X We give theoretical and practical information on the Pari/GP modular forms package available since the spring of 2018. Thanks to the use of products of two Eisenstein series, this package is the first which can compute Fourier expansions at any cusps, evaluate modular forms near the real axis, evaluate L-functions of non-eigenforms, and compute general Petersson scalar products. %G English %2 https://inria.hal.science/hal-01883565/document %2 https://inria.hal.science/hal-01883565/file/cohenmod.pdf %L hal-01883565 %U https://inria.hal.science/hal-01883565 %~ CNRS %~ INRIA %~ INRIA-BORDEAUX %~ INSMI %~ INRIA_TEST %~ TESTALAIN1 %~ TESTBORDEAUX %~ INRIA2