• openAccess   Brunn-Minkowski and Zhang inequalities for Convolution Bodies 

      Alonso Gutiérrez, David; Jiménez, C. Hugo; Villa Caro, Rafael Elsevier (2013-05-01)
      A quantitative version of Minkowski sum, extending the definition of θ- convolution of convex bodies, is studied to obtain extensions of the Brunn- Minkowski and Zhang inequalities, as well as, other interesting properties ...
    • closedAccess   Estimating Support Functions of Random Polytopes via Orlicz Norms 

      Alonso Gutiérrez, David; Prochno, Joscha Springer-Verlag (2013)
      We study the expected value of support functions of random polytopes in a certain direction, where the random polytope is given by independent random vectors uniformly distributed in an isotropic convex body. All results ...
    • closedAccess   On a reverse Petty projection inequality for projections of convex bodies 

      Alonso Gutiérrez, David De Gruyter (2014-03)
      We prove a reverse Petty projection inequality which is satisfied by every convex body K. We also study given a convex body K estimates for the dimension k such that there exists a k-dimensional orthogonal projection of K ...
    • openAccess   On mean outer radii of random polytopes 

      Alonso Gutiérrez, David; Nikos, Dafnis; Hernández Cifre, Maria Ángeles; Prochno, Joscha Indiana University Mathematics Journal (2014)
      In this paper we introduce a new sequence of quantities for random polytopes. Let KN = conv{X1, . . . ,XN} be a random polytope generated by independent random vectors uniformly distributed in an isotropic convex body K ...
    • openAccess   On the Isotropic Constant of Random Polytopes 

      Alonso Gutiérrez, David; Litvak, Alexander E.; Tomczak-Jaegermann, Nicole Springer Verlag (2015-01)
      Let X1,…,XN be independent random vectors uniformly distributed on an isotropic convex body K ⊂ Rn, and let KN be the symmetric convex hull of Xi’s. We show that with high probability LKN ≤ C√log(2N/n), where C is an ...
    • closedAccess   Volume inequalities for the i-th-convolution bodies 

      Alonso Gutiérrez, David; González, Bernardo; Jimenez, C. Hugo Elsevier (2015-04)
      We obtain a new extension of Rogers–Shephard inequality providing an upper bound for the volume of the sum of two convex bodies K and L. We also give lower bounds for the volume of the k-th limiting convolution body of two ...