An affine isoperimetric inequality.
Petty Projection Inequality
References
Lutwak, E. "Selected Affine Isoperimetric Inequalities." In Handbook of Convex Geometry (Ed. P. M. Gruber and J. M. Wills). Amsterdam, Netherlands: North-Holland, pp. 151-176, 1993.Referenced on Wolfram|Alpha
Petty Projection InequalityCite this as:
Weisstein, Eric W. "Petty Projection Inequality." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/PettyProjectionInequality.html