74 citations
- Wabash CollegeUS2 papers
- Abington Memorial HospitalUS1 paper
- Kitt Peak National ObservatoryUS1 paper
- Max Planck Institute for Radio AstronomyDE1 paper
- Max Planck SocietyDE1 paper
- Palomar CollegeUS1 paper
- Pennsylvania State UniversityUS1 paper
- San Diego State UniversityUS1 paper
- Space Telescope Science InstituteUS1 paper
- University of California, BerkeleyUS1 paper
- University of California, IrvineUS1 paper
8 papers
The Dual-Axis Circumstellar Environment of the Type IIn Supernova 1997eg
Jennifer L. Hoffman, Douglas C. Leonard, Ryan Chornock +3
We present multi-epoch spectral and spectropolarimetric observations of the Type IIn supernova (SN) 1997eg that indicate the presence of a flattened disk-like concentration of circ…
Three Years of Mira Variable CCD Photometry: What Has Been Learned?
D. E. Mais, D. Richards, R. E. Stencel
The subject of micro-variability among Mira stars has received increased attention since DeLaverny et al. (1998) reported short-term brightness variations in 15 percent of the 250…
HST/NICMOS Imaging Polarimetry of Proto-Planetary Nebulae II: Macro-morphology of the Dust Shell Structure via Polarized Light
Toshiya Ueta, Koji Murakawa, Margaret Meixner
The structure of the dusty circumstellar envelopes (CSEs) of proto-planetary nebulae (PPNs) reveals the mass-loss history of these sources and how such histories may differ for ell…
Right division in groups, Dedekind-Frobenius group matrices, and Ward quasigroups
Kenneth W. Johnson, Petr Vojtěchovský
The variety of quasigroups satisfying the identity mirrors the variety of groups, and offers a new look at groups and their multiplication tables. Such quasigroups ar…
The varieties of quasigroups of Bol-Moufang type: An equational reasoning approach
J. D. Phillips, Petr Vojtěchovský
A quasigroup identity is of Bol-Moufang type if two of its three variables occur once on each side, the third variable occurs twice on each side, the order in which the variables a…
The varieties of loops of Bol-Moufang type
J. D. Phillips, Petr Vojtěchovský
A loop identity is of Bol-Moufang type if two of its three variables occur once on each side, the third variable occurs twice on each side, and the order in which the variables app…