The multistep homology of the simplex and representations of symmetric groups. / Wildon, Mark.

In: Mathematical Proceedings of the Cambridge Philosophical Society, 20.06.2019, p. 1-23.

Research output: Contribution to journalArticlepeer-review

E-pub ahead of print



The symmetric group on a set acts transitively on the set of its subsets of a fixed size. We define homomorphisms between the corresponding permutation modules, defined over a field of characteristic two, which generalize the boundary maps from simplicial homology. The main results determine when these chain complexes are exact and when they are split exact. As a corollary we obtain a new explicit construction of the basic spin modules for the symmetric group.
Original languageEnglish
Pages (from-to)1-23
Number of pages23
JournalMathematical Proceedings of the Cambridge Philosophical Society
Early online date20 Jun 2019
Publication statusE-pub ahead of print - 20 Jun 2019
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

ID: 33719646