Geodesic
Higher Whitehead Products in Moment--Angle Complexes and Substitution of Simplicial Complexes
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Algebraic topology, combinatorics, and mathematical physics, Tome 305 (2019), pp. 7-28.

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We study the question of realisability of iterated higher Whitehead products with a given form of nested brackets by simplicial complexes, using the notion of the moment–angle complex $\mathcal Z_\mathcal K$. Namely, we say that a simplicial complex $\mathcal K$ realises an iterated higher Whitehead product $w$ if $w$ is a nontrivial element of $\pi _*(\mathcal Z_\mathcal K)$. The combinatorial approach to the question of realisability uses the operation of substitution of simplicial complexes: for any iterated higher Whitehead product $w$ we describe a simplicial complex $\partial \Delta _w$ that realises $w$. Furthermore, for a particular form of brackets inside $w$, we prove that $\partial \Delta _w$ is the smallest complex that realises $w$. We also give a combinatorial criterion for the nontriviality of the product $w$. In the proof of nontriviality we use the Hurewicz image of $w$ in the cellular chains of $\mathcal Z_\mathcal K$ and the description of the cohomology product of $\mathcal Z_\mathcal K$. The second approach is algebraic: we use the coalgebraic versions of the Koszul and Taylor complexes for the face coalgebra of $\mathcal K$ to describe the canonical cycles corresponding to iterated higher Whitehead products $w$. This gives another criterion for realisability of $w$. 
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Semyon A. Abramyan; Taras E. Panov. Higher Whitehead Products in Moment--Angle Complexes and Substitution of Simplicial Complexes. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Algebraic topology, combinatorics, and mathematical physics, Tome 305 (2019), pp. 7-28. http://geodesic.mathdoc.fr/item/TM_2019_305_a0/

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