most citedRelativistic Jets in The Radio Reference Frame Image Database I: Apparent Speeds from the First Five Years of Data

68 citations

researchers with a paper here
collaborating institutions

3 papers

math.GT2007

Virtual Yang-Baxter cocycle invariants

Jose Ceniceros, Sam Nelson

We extend the Yang-Baxter cocycle invariants for virtual knots by augmenting Yang-Baxter 2-cocycles with cocycles from a cohomology theory associated to a virtual biquandle structu…

astro-ph2007★ 68 cited

Relativistic Jets in The Radio Reference Frame Image Database I: Apparent Speeds from the First Five Years of Data

B. G. Piner, M. Mahmud, A. L. Fey +1

(Abridged) We present the results of an analysis of relativistic jet apparent speeds from VLBI images in the Radio Reference Frame Image Database (RRFID). The images are snapshot V…

math.QA2007★ 2 cited

A polynomial invariant of finite quandles

Sam Nelson

We define a two-variable polynomial invariant of finite quandles. In many cases this invariant completely determines the algebraic structure of the quandle up to isomorphism. We us…