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11. Convex body strings
11.1 Cordes d'un corps converse
In this section, a chord is defined as an infinitesimal linear intercept of an isolated convex body (the intercept is thus connected).
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Theorem (Crofton's formula for average string length, 1869). For a two-dimensional convex body isolated in the Euclidean plane
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Convex body strings
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