The non-annihilating graph conjecture for Monster-type axial algebras

Let AA be an axial algebra of Monster-type with generating axes XX, and let Δ(X)\Delta(X) be the graph whose vertices are the axes in XX, with distinct vertices a,ba,b adjacent exactly when ab0ab\neq 0. A sum decomposition is a decomposition A=iIAiA=\sum_{i\in I}A_i into axial subalgebras, with distinct summands annihilating one another, and let XiXX_i\subseteq X be the axes contained in AiA_i. Non-annihilating graph conjecture. The finest sum decomposition of AA arises when each XiX_i is a single connected component of Δ(X)\Delta(X). This conjecture proposes that the connected components of the non-annihilating graph determine the finest sum decomposition; the supplied text gives no resolution status.

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Primary source

Sanhan Khasraw, Justin McInroy and Sergey Shpectorov, “On the structure of axial algebras”, arXiv:1809.10132 (2019).

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