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7 papers · 1 filter
Cycle up-down permutations
Emeric Deutsch, Sergi Elizalde
A permutation is defined to be cycle-up-down if it is a product of cycles that, when written starting with their smallest element, have an up-down pattern. We prove bijectively and…
Coactions and Fell bundles
S. Kaliszewski, Paul S. Muhly, John Quigg +1
We show that if is a Fell bundle over a locally compact group , then there is a natural coaction of on the Fell-bundle -algebra such that if …
Dust and the type II-plateau supernova 2004et
Rubina Kotak, Peter Meikle, Duncan Farrah +14
We present mid-infrared (MIR) observations of the Type II-plateau supernova (SN) 2004et, obtained with the {\it Spitzer Space Telescope} between days 64 and 1406 past explosion. La…
Rank statistics for a family of elliptic curves over a function field
Carl Pomerance, Igor E. Shparlinski
We show that the average and typical ranks in a certain parametric family of elliptic curves described by D. Ulmer tend to infinity as the parameter . This is perhaps…
The Case for Deep, Wide-Field Cosmology
Ryan Scranton, Andreas Albrecht, Robert Caldwell +14
Much of the science case for the next generation of deep, wide-field optical/infrared surveys has been driven by the further study of dark energy. This is a laudable goal (and the…
Lensed Cosmic Microwave Background Constraints on Post-General Relativity Parameters
Paolo Serra, Asantha Cooray, Scott F. Daniel +2
The constraints on departures from general relativity (GR) at cosmological length scales due to cosmic microwave background (CMB) data are discussed. The departure from GR is measu…