Pith. sign in

REVIEW 2 cited by

Equivariant quasisymmetry and noncrossing partitions

Not yet reviewed by Pith; the record is open.

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 2504.15234 v1 pith:TE33SEBL submitted 2025-04-21 math.CO math.AG

classification math.COmath.AG
keywords doublepolynomialsequivariantplaysquasisymmetrycalldefinitionflag
verification ladder T0 review T1 audit T2 compute T3 formal
0 comments
abstract

We introduce a definition of ``equivariant quasisymmetry'' for polynomials in two sets of variables. Using this definition we define quasisymmetric generalizations of the theory of double Schur and double Schubert polynomials that we call double fundamental polynomials and double forest polynomials, where the subset of ``noncrossing partitions'' plays the role of $S_n$. In subsequent work we will show this combinatorics is governed by a new geometric construction we call the ``quasisymmetric flag variety'' which plays the same role for equivariant quasisymmetry as the usual flag variety plays in the classical story.

Discussion (0). Continue with ORCID to comment.

Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. The Springer Geometry of Specht Polynomials and Schubert cycle positivity for two row Springer fiber components

    math.AG 2026-07 conditional novelty 8.0 of 10

    Two-row Springer fiber components have positive Schubert cycle expansions counted by reduced words compatible with noncrossing matchings.

  2. Richardson tableaux and Schubert positivity

    math.CO 2025-10 conditional novelty 7.0 of 10

    The Schubert cycle expansion of a Springer fiber component equal to a Richardson variety, indexed by a Richardson tableau, is computed combinatorially using translation-equivalent Bruhat intervals and Sottile's Pieri rule.

Pith tools