This repo is thought of as a sandbox for experiments with applications of Proposition 5.9 (essentially Proposition 2.4 from the preprint https://arxiv.org/abs/1801.02601) from the monograph A.O. Matveev, Symmetric Cycles, Singapore: Jenny Stanford Publishing, 2023.
At the current moment, our goal is to show a not too optimized mechanism of creating the exact linear algebraic portrait (2.11), called the primary portrait, of the file Desdemona.txt, presented in the preprint https://arxiv.org/abs/2303.16135.
We also create three secondary exact (ir)redundant portraits; see the interactive note intro_into_primary_and_secondary_portraits.