175 citations
7 papers
Optimal Attitude Estimation and Filtering Without Using Local Coordinates Part I: Uncontrolled and Deterministic Attitude Dynamics
Amit K. Sanyal
There are several attitude estimation algorithms in existence, all of which use local coordinate representations for the group of rigid body orientations. All local coordinate repr…
Recent Progress in Graph Pebbling
Glenn Hurlbert
The subject of graph pebbling has seen dramatic growth recently, both in the number of publications and in the breadth of variations and applications. Here we update the reader on…
Covariant representations of Hecke algebras and imprimitivity for crossed products by homogeneous spaces
Astrid an Huef, S. Kaliszewski, Iain Raeburn
For discrete Hecke pairs , we introduce a notion of covariant representation which reduces in the case where is normal to the usual definition of covariance for the acti…
Understanding our Origins: Star Formation in H II Region Environments
J. Jeff Hester, Steven J. Desch
Recent analysis of the decay products of short-lived radiounclides (SLRs) in meteorites, in particular the confirmation of the presence of live 60Fe in the early Solar System, prov…
Traveling wave solutions of Fitzhugh model with cross-diffusion
F. Berezovskaya, E. Camacho, S. Wirkus +1
The Fitzhugh-Nagumo equations have been used as a caricature of the Hodgkin-Huxley equations of neuron firing to better understand the essential dynamics of the interaction of the…
Non-cyclotomic Presentations of Modules and Prime-order Automorphisms of Kirchberg Algebras
Jack Spielberg
We prove the following theorem: let be a UCT Kirchberg algebra, and let be a prime-order automorphism of , with in case is unital. Then is…