# Software

### numperiods

*numperiods* is a Sagemath package to compute periods of projective surfaces
as well as related invariants (Picard group, endomorphism ring). It was used to compute the database
quarticdb.

gitlab.inria.fr/lairez/numperiods

### BinomSums

*BinomSums* is a package for the computer algebra system Maple that provides
functions to handle multiple binomial sums through integral representations. It
implements the algorithms described in “Multiple binomial sums” (with Bostan and Salvy).

### Periods

*Periods* is a package for the computer algebra system Magma that provides
functions to compute periods of rational integrals. It implements the algorithm
described in “Computing periods of rational integrals”. Several computational *premières* have
been performed with it and it has been critical in augmenting and the database of Calabi-Yau
operators.
It is also capable of integrating the integral representations that the package *BinomSums* outputs.