Discrete mathematics

Irreducible representation

Redundancy (engineering)

Operator (biology)

Pure mathematics

Mathematics

Python (programming language)

Finite field

Transcription factor

Politics

Gene

Operating system

Algebra over a field

Political science

Repressor

Chemistry

Programming language

Representation (politics)

Computer science

Tensor product

Biochemistry

The European Physical Journal C

BasisGen is a Python package for the automatic generation of bases of operators in effective field theories. It accepts any semisimple symmetry group and fields in any of its finite dimensional irreducible representations. It takes into account integration by parts redundancy and, optionally, the use of equations of motion. The implementation is based on well-known methods to generate and decompose representations using roots and weights, which allow for fast calculations, even with large numbers of fields and high-dimensional operators. BasisGen can also be used to do some representation-theoretic operations, such as finding the weight system of an irreducible representation from its highest weight or decomposing a tensor product of representations.

BasisGen: automatic generation of operator bases