5 research outputs found
Trisections of a 3-rotationally symmetric planar convex body minimizing the maximum relative diameter
In this work we study the fencing problem consisting of finnding a trisection
of a 3-rotationally symmetric planar convex body which minimizes the maximum
relative diameter. We prove that an optimal solution is given by the so-called
standard trisection. We also determine the optimal set giving the minimum value
for this functional and study the corresponding universal lower bound.Comment: Preliminary version, 20 pages, 15 figure
On relative isodiametric inequalities
We consider subdivisions of convex bodies G in two subsets E and G\E. We obtain several inequalities comparing the relative volume 1) with the minimum relative diameter and 2) with the maximum relative diameter. In the second case we obtain the best upper estimate only for subdivisions determined by straight lines in planar sets
On fencing problems
Fencing problems deal with the bisection of a convex body in a way that some geometric measures are optimized. We study bisections of planar bounded convex sets by straight line cuts and also bisections by hyperplane cuts for convex bodies in higher dimensions