Some Affine Invariants Revisited

We present several sharp inequalities for the SL(n) invariant $Ω_{2,n}(K)$ introduced in our earlier work on centro-affine invariants for smooth convex bodies containing the origin. A connection arose with the Paouris-Werner invariant $Ω_K$ defined for convex bodies $K$ whose centroid is at the origin. We offer two alternative definitions for $Ω_K$ when $K \in C^2_+$. The technique employed prompts us to conjecture that any SL(n) invariant of convex bodies with continuous and positive centro-affine curvature function can be obtained as a limit of normalized $p$-affine surface areas of the convex body.

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