The generalized one-layer conjecture for framed graph-layer presentations

Let

Ω=TimjmkmTi1j1k1\Omega=T_{i_mj_m}^{k_m}\cdots T_{i_1j_1}^{k_1}

be a graph-layer word in the twists TijT_{ij}, and let m=(m1,,mg)Zg\mathbf m=(m_1,\ldots,m_g)\in\mathbb Z^g. Put

Vm=Tx1m1Txgmg.V_{\mathbf m}=T_{x_1}^{m_1}\cdots T_{x_g}^{m_g}.

The associated framed graph-layer presentation is

G(m,Ω)=a1,,ag|γVmΩ(y1),,γVmΩ(yg).G(\mathbf m,\Omega)=\left\langle a_1,\ldots,a_g\\ \middle|\\ \gamma V_{\mathbf m}\Omega(y_1),\ldots,\gamma V_{\mathbf m}\Omega(y_g)\right\rangle.

A framed graph-layer presentation is framed generalized one-layer when its underlying graph-layer word is equivalent, using the defining relations among the twists TijT_{ij}, to a recursively peelable word. Generalized one-layer conjecture. If a framed graph-layer presentation defines the trivial group, then it is a framed generalized one-layer presentation. The conjecture asserts that triviality forces a recursively peelable twist representative; its status and consequences for the proposed classification of these presentations remain open in the source.

Sources & referencesView supporting material

Primary source

Olga Kharlampovich and Alina Vdovina, “Equations in Products of Free Groups and 3-Manifold Groups, I”, arXiv:2606.00335 (2026).

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