English

On braided Hopf structures on exterior algebras

Quantum Algebra 2025-12-01 v2 Mathematical Physics Geometric Topology math.MP Rings and Algebras

Abstract

We show that the exterior algebra of a vector space VV of dimension greater than one admits a one-parameter family of braided Hopf algebra structures, arising from its identification with a Nichols algebra. We explicitly compute the structure constants with respect to a natural set-theoretic basis. A one-parameter family of diagonal automorphisms exists, which we use to construct solutions to the (constant) Yang--Baxter equation. These solutions are conjectured to give rise to the two-variable Links--Gould polynomial invariants associated with the super-quantum group Uq(gl(N1))U_q(\mathfrak{gl}(N|1)), where N=dim(V)N = \dim(V). We support this conjecture through computations for small values of NN.

Keywords

Cite

@article{arxiv.2505.15569,
  title  = {On braided Hopf structures on exterior algebras},
  author = {Rinat Kashaev and Vladimir Mangazeev},
  journal= {arXiv preprint arXiv:2505.15569},
  year   = {2025}
}

Comments

27 pages, this is a major revision with all proofs and new results added