On Godbersen’s conjecture
On Godbersen’s conjecture
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发表时间:
2014
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通讯作者:
Y. Ostrover
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作者:
S. Artstein;Keshet Einhorn;D. Florentin;Y. Ostrover
We provide a natural generalization of a geometric conjecture of Fáry and Rédei regarding the volume of the convex hull of $$K subset {mathbb {R}}^n$$K⊂Rn, and its negative image $$-K$$-K. We show that it implies Godbersen’s conjecture regarding the mixed volumes of the convex bodies $$K$$K and $$-K$$-K. We then use the same type of reasoning to produce the currently best known upper bound for the mixed volumes $$V(K[j], -K[n-j])$$V(K[j],-K[n-j]), which is not far from Godbersen’s conjectured bound. To this end we prove a certain functional inequality generalizing Colesanti’s difference function inequality.