8 papers
The Structure of Cycles in Projective Geometry over
Ran J. Tessler, Elad Tzalik
A classical geometric result says that every nonzero cycle of the mod- incidence map from -subsets to -subsets of has support at least , with equality attai…
The number of tiles of
Itai Benjamini, Gady Kozma, Elad Tzalik
It is proved that the number of subsets of that tile is .
Greedy Completion for Weighted -Spanners
Elad Tzalik
We study -spanners for weighted graphs. We propose a simple greedy completion procedure which starts from a sparse initial graph, and repeatedly fixes pairs of vertices wi…
Determining a Points Configuration from a Subset of the Pairwise Distances
Itai Benjamini, Elad Tzalik
We study rigidity without assuming general position. Given distinct labelled points and a set of revealed pairs, we ask when the correspon…
New Greedy Spanners and Applications
Elizaveta Popova, Elad Tzalik
We present a simple greedy procedure to compute an -spanner for a graph . We then show that this procedure is useful for building fault-tolerant spanners, as well as sp…
Hypercube minor-universality
Itai Benjamini, Or Kalifa, Elad Tzalik
A graph is -minor-universal if every graph with at most edges (and no isolated vertices) is a minor of . We prove that the -dimensional hypercube, , is $Ω\le…