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CORR
2010
Springer
122views Education» more  CORR 2010»
15 years 24 days ago
How to meet asynchronously (almost) everywhere
Two mobile agents (robots) with distinct labels have to meet in an arbitrary, possibly infinite, unknown connected graph or in an unknown connected terrain in the plane. Agents ar...
Jurek Czyzowicz, Arnaud Labourel, Andrzej Pelc
SIAMDM
2008
118views more  SIAMDM 2008»
15 years 18 days ago
Ramsey-Type Problem for an Almost Monochromatic K4
In this short note we prove that there is a constant c such that every k-edge-coloring of the complete graph Kn with n 2ck contains a K4 whose edges receive at most two colors. Th...
Jacob Fox, Benny Sudakov
108
Voted
GC
2008
Springer
15 years 22 days ago
Almost Given Length Cycles in Digraphs
For a directed graph G without loops or parallel edges, let (G) denote the size of the smallest feedback arc set, i.e., the smallest subset X E(G) such that G \ X has no directed...
Raphael Yuster
ASIACRYPT
2006
Springer
15 years 4 months ago
Almost Optimum Secret Sharing Schemes Secure Against Cheating for Arbitrary Secret Distribution
We consider the problem of cheating in secret sharing schemes, cheating in which individuals submit forged shares in the secret reconstruction phase in an effort to make another pa...
Satoshi Obana, Toshinori Araki
RSA
2010
94views more  RSA 2010»
14 years 11 months ago
Word maps and spectra of random graph lifts
We study here the spectra of random lifts of graphs. Let G be a finite connected graph, and let the infinite tree T be its universal cover space. If λ1 and ρ are the spectral ...
Nati Linial, Doron Puder