About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Publication
Algorithmica
Paper
A lower bound on the area of permutation layouts
Abstract
In this paper we prove a tight Ω(n 3) lower bound on the area of rectilinear grids which allow a permutation layout of n inputs and n outputs. Previously, the best lower bound for the area of permutation layouts with arbitrary placement of the inputs and outputs was Ω(n 2), though Cutler and Shiloach [CS] proved an Ω(n 2.5) lower bound for permutation layouts in which the set of inputs and the set of outputs each lie on horizontal lines. Our lower bound also holds for permutation layouts in multilayer grids as long as a fixed fraction of the paths do not change layers. © 1991 Springer-Verlag New York Inc.