524 citations
- Dartmouth HospitalGB30 papers
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- University of IowaUS4 papers
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- European Southern ObservatoryCL2 papers
- Space Telescope Science InstituteUS2 papers
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9 papers · 1 filter
Fixed points and excedances in restricted permutations
Sergi Elizalde
In this paper we prove that among the permutations of length n with i fixed points and j excedances, the number of 321-avoiding ones equals the number of 132-avoiding ones, for all…
Gravitation of the Casimir Effect and the Cosmological Non-Constant
R. R. Caldwell
Whereas the total energy in zero-point fluctuations of the particle physics vacuum gives rise to the cosmological constant problem, differences in the vacuum give rise to real phys…
The Dixmier-Douady Class of Groupoid Crossed Products
Paul S. Muhly, Dana P. Williams
We give a formula for the Dixmier-Douady class of a continuous-trace groupoid crossed product that arises from an action of a locally trivial, proper, principal groupoid on a bundl…
Isospectral potentials and conformally equivalent isospectral metrics on spheres, balls and Lie groups
Carolyn S. Gordon, Dorothee Schueth
We construct pairs of conformally equivalent isospectral Riemannian metrics and on spheres and balls for certain dimensions , the smallest of whi…
Resonant emergence of global and local spatiotemporal order in a nonlinear field model
Marcelo Gleiser, Rafael C. Howell
We investigate the nonequilibrium evolution of a scalar field in (2+1) dimensions. The field is set in a double-well potential in contact (open) or not (closed) with a heat bath. F…
An alternative interpretation for the Holm "alpha model"
David C. Montgomery, Annick Pouquet
By re-interpreting a recent successful closure procedure in terms of local spatial averaging and the neglect of fluctuations about that average, it is shown how the results of that…