12 citations
2 papers
math.AC2009★ 1 cited
On the Thom-Boardman Symbols for Polynomial Multiplication Maps
Jiayuan Lin, Janice Wethington
The Thom-Boardman symbol was first introduced by Thom in 1956 to classify singularities of differentiable maps. It was later generalized by Boardman to a more general setting. Alth…
astro-ph2006★ 12 cited
Dodecahedral topology fails to explain quadrupole-octupole alignment
Jeff Weeks, Jesper Gundermann
The CMB quadrupole and octupole, as well as being weaker than expected, align suspiciously well with each other. Non-trivial spatial topology can explain the weakness. Might it als…