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6 papers · 1 filter
Finite subgraphs of uncountably chromatic graphs
Péter Komjáth, Saharon Shelah
It is consistent that for every monotonically increasing function f:omega->omega there is a graph with size and chromatic number aleph_1 in which every n-chromatic subgraph has at…
A partition theorem for scattered order types
Peter Komjath, Saharon Shelah
If phi is a scattered order type, mu a cardinal, then there exists a scattered order type psi such that psi->[phi]^1_{mu,aleph_0} holds.
Z-Burst Scenario for the Highest Energy Cosmic Rays
Z. Fodor, S. D. Katz, A. Ringwald
The origin of highest energy cosmic rays is yet unknown. An appealing possibility is the so-called Z-burst scenario, in which a large fraction of these cosmic rays are decay produc…
A logarithmic contribution to the density of states of rectangular Andreev billiards
A. Kormányos, Z. Kaufmann, J. Cserti +1
We demonstrate that the exact quantum mechanical calculations are in good agreement with the semiclassical predictions for rectangular Andreev billiards and therefore for a large n…
Tunable Lyapunov exponent in inverse magnetic billiards
Zoltán Vörös, Tamás Tasnádi, József Cserti +1
The stability properties of the classical trajectories of charged particles are investigated in a two dimensional stadium-shaped inverse magnetic domain, where the magnetic field i…
Avalanche Dynamics in Wet Granular Media
P. Tegzes, T. Vicsek, P. Schiffer
A detailed characterization of avalanche dynamics of wet granular media in a rotating drum apparatus is presented. The results confirm the existence of the three wetness regimes ob…