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Grace–van Zwam's frame-template structure conjecture
Frame-template conjecture. There exist $k\in\mathbb Z_+$ and frame templates $\Phi_1,\ldots,\Phi_s,\Psi_1,\ldots,\Psi_t$ such that $\mathcal{M}$ contains each class…
openframe-templates matroid-theory minor-closed-classes
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Grace–van Zwam's frame-template structure conjecture