Persistence Steenrod modules
Umberto Lupo, Anibal M. Medina-Mardones, Guillaume Tauzin · Journal of Applied and Computational Topology · 2022
Abstract It has long been envisioned that the strength of the barcode invariant of filtered cellular complexes could be increased using cohomology operations. Leveraging recent advances in the computation of Steenrod squares, we introduce a new family of computable invariants on mod 2 persistent cohomology termed $$Sq^k$$ Sqk -barcodes. We present a complete algorithmic pipeline for their computation and illustrate their real-world applicability using the space of conformations of the cyclo-octane molecule.