Sergei Yakovenko's blog: on Math and Teaching
Definitions of geodesic curves on a Riemmanian manifold. Differential equations of the second order. Local existence of solutions. Geodesic map. Geodesic spheres, orthogonality. Local minimality of geodesic curves. 58 more words
2 weeks, 5 days ago
Hard Science Ain't Hard
A familiar shadow loomed in from the hallway.
“C’mon in, Vinnie, the door’s open.”
“I brought some sandwiches, Sy.”
“Oh, thanks, Vinnie.”
“Don’t mention it. An’ I got another LIGO issue.” 704 more words
1 month ago
Peter Cameron's Blog
Yesterday we had a very nice talk about Liouville, given by Jesper Lützen from Copenhagen.
I am not going to summarise his talk. But here are a few small facts about Liouville which I didn’t know. 43 more words
4 months, 1 week ago