Bezdek–Bezdek's successive inradius plank conjecture

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Let K\mathbf{K} and C\mathbf{C} be convex bodies in Ed\mathbb{E}^d, with d≥2d\geq 2, and let mm be a positive integer. For each body, let rC(⋅,m)r_{\mathbf{C}}(\cdot,m) denote its mmth successive C\mathbf{C}-inradius. Bezdek–Bezdek's successive inradius plank conjecture. If K\mathbf{K} is covered by the planks P1,P2,…,Pn\mathbf{P}_1,\mathbf{P}_2,\dots,\mathbf{P}_n in Ed\mathbb{E}^d, then

∑i=1nrC(Pi,m)≥rC(K,m),\sum_{i=1}^n r_{\mathbf{C}}(\mathbf{P}_i,m)\geq r_{\mathbf{C}}(\mathbf{K},m),

or equivalently,

∑i=1nwC(Pi)≥mrC(K,m).\sum_{i=1}^n w_{\mathbf{C}}(\mathbf{P}_i)\geq m r_{\mathbf{C}}(\mathbf{K},m).

This is stated as an equivalent strengthening of the affine plank and slicing conjectures, and its resolution is not supplied in the source context.

References

Primary source

Karoly Bezdek, “Plank theorems via successive inradii”, arXiv:1402.0538 (2014).

Additional references

2 papers in this index state this conjecture (2009–2014). The statement above is taken from the most recent of them; the others are arXiv:0903.4637.

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