A Littlewood-Richardson rule counts pairs of forest RC graphs whose lift product matches a target forest-code and weight c, and the same rule applies to dual bases via a new Schubert bialgebra.
Schubert polynomials, pipe dreams, equivariant classes, and a co-transition formula
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A Littlewood-Richardson Rule for Forest Polynomials via the Schubert Bialgebra
A Littlewood-Richardson rule counts pairs of forest RC graphs whose lift product matches a target forest-code and weight c, and the same rule applies to dual bases via a new Schubert bialgebra.