64 citations
- University of Illinois Urbana-ChampaignUS11 papers
- Instituto de Astrofísica de AndalucíaES2 papers
- University of California SystemUS2 papers
- Astronomy and SpaceAU1 paper
- Brown UniversityUS1 paper
- California Institute of TechnologyUS1 paper
- CCI Reprographics (United States)US1 paper
- Consejo Superior de Investigaciones CientíficasES1 paper
- Cornell UniversityUS1 paper
- Fermi National Accelerator LaboratoryUS1 paper
- Indiana UniversityUS1 paper
- Institute for Atomic and Molecular PhysicsNL1 paper
18 papers
A Time-Optimal Delaunay Refinement Algorithm in Two Dimensions
Sariel Har-Peled, Alper Ungor
We propose a new refinement algorithm to generate size-optimal quality-guaranteed Delaunay triangulations in the plane. The algorithm takes time, where is the…
Low-energy neutrino beams with an upgraded Fermilab proton driver
S. J. Brice, S. Geer, K. Paul +1
The beam properties of low-energy neutrino beams that would be possible at an upgraded 2 MW Fermilab 8 GeV Proton Source are described. In particular three options are considered;…
A Generalized Floor Bound for the Minimum Distance of Geometric Goppa Codes and its Application to Two-Point Codes
Benjamin Lundell, Jason McCullough
We prove a new bound for the minimum distance of geometric Goppa codes that generalizes two previous improved bounds. We include examples of the bound to one and two point codes ov…
Non-hopfian relatively free groups
S. V. Ivanov, A. M. Storozhev
To solve problems of Gilbert Baumslag and Hanna Neumann, posed in the 1960's, we construct a nontrivial variety of groups all of whose noncyclic free groups are non-hopfian.
Imaging and Spectroscopy of the Planetary Nebula NGC 6778
Vicente Maestro, Martin A. Guerrero, Luis F. Miranda
We present narrow-band images and long-slit echelle spectra of the planetary nebula (PN) NGC 6778. The data show this PN as bipolar, with a very prominent low-excitation equatorial…
Multiple Point-Symmetric Ejections in IC 4634
Martin A. Guerrero, Luis F. Miranda, You-Hua Chu
We present a spatio-kinematical study of the planetary nebula (PN) IC 4634 which has experienced several episodes of point-symmetric ejections oriented at different directions. The…