English

Computations of topological Jacobi forms

Algebraic Topology 2026-02-03 v1

Abstract

We compute, at the prime 22, the entire descent spectral sequence converging to the homotopy groups of the spectra of topological Jacobi forms TJFm\mathrm{TJF}_m for every index m1m \geq 1. An explicit TMF\mathrm{TMF}-cellular decomposition TJFmTMFPm\mathrm{TJF}_m \simeq \mathrm{TMF} \otimes P_m reduces the problem to analyzing a finite complex PmP_m with one even cell in each dimension 2m\leq 2m except 22. We identify all differentials using the cell structure.

Keywords

Cite

@article{arxiv.2602.01584,
  title  = {Computations of topological Jacobi forms},
  author = {Akira Tominaga},
  journal= {arXiv preprint arXiv:2602.01584},
  year   = {2026}
}

Comments

50 pages, 37 figures

R2 v1 2026-07-01T09:30:49.991Z