Support functions of central convex bodies

Lindquist, Norman F.

Displaying similar documents to “Support functions of central convex bodies”

Approximation of convex bodies by sums of line segments

Lindquist, Norman F. (1975)

Portugaliae mathematica

Similarity:

Spherical and ellipsoidality theorems for convex bodies

Dorn, C. (1978)

Portugaliae mathematica

Similarity:

A measure of axial symmetry of centrally symmetric convex bodies

Marek Lassak, Monika Nowicka (2010)

Colloquium Mathematicae

Similarity:

Denote by Kₘ the mirror image of a planar convex body K in a straight line m. It is easy to show that K*ₘ = conv(K ∪ Kₘ) is the smallest by inclusion convex body whose axis of symmetry is m and which contains K. The ratio axs(K) of the area of K to the minimum area of K*ₘ over all straight lines m is a measure of axial symmetry of K. We prove that axs(K) > 1/2√2 for every centrally symmetric convex body and that this estimate cannot be improved in general. We also give a formula for...

Convex bodies with circumscribing boxes of constant volume

Petty, C.M., McKinney, James R. (1987)

Portugaliae mathematica

Similarity:

The skeleta of convex bodies

David G. Larman (2009)

Banach Center Publications

Similarity:

The connectivity and measure theoretic properties of the skeleta of convex bodies in Euclidean space are discussed, together with some long standing problems and recent results.

A general geometric construction for affine surface area

Elisabeth Werner (1999)

Studia Mathematica

Similarity:

Let K be a convex body in $ℝ^{n}$ and B be the Euclidean unit ball in $ℝ^{n}$ . We show that $l i m_{t \to 0} (| K | - | K_{t} |) / (| B | - | B_{t} |) = a s (K) / a s (B)$ , where as(K) respectively as(B) is the affine surface area of K respectively B and ${K_{t}}_{t \geq 0}$ , ${B_{t}}_{t \geq 0}$ are general families of convex bodies constructed from K,B satisfying certain conditions. As a corollary we get results obtained in [M-W], [Schm], [S-W] and [W].

A measure of asymmetry for convex surfaces

Asplund, E., Bredon, G., Grünbaum, B. (1960)

Portugaliae mathematica

Similarity:

The determination of convex bodies from the size and shape of their projections and sections

Paul Goodey (2009)

Banach Center Publications

Similarity:

We survey results concerning the extent to which information about a convex body's projections or sections determine that body. We will see that, if the body is known to be centrally symmetric, then it is determined by the size of its projections. However, without the symmetry condition, knowledge of the average shape of projections or sections often determines the body. Rather surprisingly, the dimension of the projections or sections plays a key role and exceptional cases do occur...