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Boris Bukh
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Let $S \subset \mathbb{R}^n$ be the boundary of a centrally symmetric convex body and provide $S$ with the geodesic metric given by its embedding in Euclidean space (i.e., the distance between two points is the infinimum of the Euclidean lengths of all rectifiable curves on $S$ that join them).

Question. Is the diameter of $S$ realized by a pair of antipodal points?

I am curious about this question when the metric is the induced metric from euclidean space, but I'm mostly inetrested in the case of a polytope provided the graph metric on the one skeleton1-skeleton. In the discrete case I do not care too much about constants.

Let $S \subset \mathbb{R}^n$ be the boundary of a centrally symmetric convex body and provide $S$ with the geodesic metric given by its embedding in Euclidean space (i.e., the distance between two points is the infinimum of the Euclidean lengths of all rectifiable curves on $S$ that join them).

Question. Is the diameter of $S$ realized by a pair of antipodal points?

I am curious about this question when the metric is the induced metric from euclidean space, but I'm mostly inetrested in the case of a polytope provided the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

Let $S \subset \mathbb{R}^n$ be the boundary of a centrally symmetric convex body and provide $S$ with the geodesic metric given by its embedding in Euclidean space (i.e., the distance between two points is the infinimum of the Euclidean lengths of all rectifiable curves on $S$ that join them).

Question. Is the diameter of $S$ realized by a pair of antipodal points?

I am curious about this question when the metric is the induced metric from euclidean space, but I'm mostly inetrested in the case of a polytope provided the graph metric on the 1-skeleton. In the discrete case I do not care too much about constants.

Made the question precise based on the comment by its author. However, the meaning of the second part remains unclear to me.
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alvarezpaiva
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IsLet $S \subset \mathbb{R}^n$ be the diameterboundary of a centrally symmetric convex body realizedand provide $S$ with the geodesic metric given by a pair of antipodal points?

Given a convex body K,, such that t K=-Kits embedding in Euclidean space (i.e., the distance between two points is there a point; suchthe infinimum of the Euclidean lengths of all rectifiable curves on $S$ that $diam(\partial K)=d(x,-x)$join them).

Question. Is the diameter of $S$ realized by a pair of antipodal points?

I am curious about this question when the metric (on $\partial K$) is the induced (pseudoriemmanian) metric from euclidean space, but mostlyI'm mostly inetrested in the case of a polytope, with provided the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

Is the diameter of a centrally symmetric convex body realized by a pair of antipodal points?

Given a convex body K,, such that t K=-K, is there a point; such that $diam(\partial K)=d(x,-x)$

I am curious about this question when the metric (on $\partial K$) is the induced (pseudoriemmanian) metric from euclidean space, but mostly in the case of a polytope, with the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

Let $S \subset \mathbb{R}^n$ be the boundary of a centrally symmetric convex body and provide $S$ with the geodesic metric given by its embedding in Euclidean space (i.e., the distance between two points is the infinimum of the Euclidean lengths of all rectifiable curves on $S$ that join them).

Question. Is the diameter of $S$ realized by a pair of antipodal points?

I am curious about this question when the metric is the induced metric from euclidean space, but I'm mostly inetrested in the case of a polytope provided the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

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Is the diameter of a centrally symmetric convex body realized by a pair of antipodal points?

Given a convex body K,, such that t K=-K, is there a point; such that $diam(K)=d(x,-x)$$diam(\partial K)=d(x,-x)$

I am curious about this question when the metric (on $\partial K$) is the induced (pseudoriemmanian) metric from euclidean space, but mostly in the case of a polytope, with the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

Is the diameter of a centrally symmetric convex body realized by a pair of antipodal points?

Given a convex body K,, such that t K=-K, is there a point; such that $diam(K)=d(x,-x)$

I am curious about this question when the metric (on $\partial K$) is the induced (pseudoriemmanian) metric from euclidean space, but mostly in the case of a polytope, with the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

Is the diameter of a centrally symmetric convex body realized by a pair of antipodal points?

Given a convex body K,, such that t K=-K, is there a point; such that $diam(\partial K)=d(x,-x)$

I am curious about this question when the metric (on $\partial K$) is the induced (pseudoriemmanian) metric from euclidean space, but mostly in the case of a polytope, with the graph metric on the one skeleton. In the discrete case I do not care too much about constants.

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