freebsd-ports/math/lrcalc/pkg-descr

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The Littlewood-Richardson Calculator is a program designed to compute
Littlewood-Richardson coefficients. This program is written in the C language to
make the computation as efficient as possible. The program can compute single
Littlewood-Richardson coefficients, products of Schur functions, or skew Schur
functions. In addition it can compute products in the small quantum cohomology
ring of a Grassmann variety. The software package also includes a program that
performs fast computation of the more general multiplicative structure constants
of Schubert polynomials.
WWW: https://sites.math.rutgers.edu/~asbuch/lrcalc/
WWW: https://bitbucket.org/asbuch/lrcalc/