I was recently trying to convince Bruno that covectors (in the form of differentials of functions) are the real deal in gradient descent, despite the misleading name and countless pictures showing little arrows pointing downhill.
If you choose not to decide, you still have made a choice. ~ Neil Peart
Thoughts I have and things I note as I learn math
confessions of a relentlessly staggering blunderer in the mindfield
Jade Master's Blog About Categories
A random mathematical blog
"A good stock of examples, as large as possible, is indispensable for a thorough understanding of any concept, and when I want to learn something new, I make it my first job to build one." - Paul Halmos
Category Theory, Haskell, Concurrency, C++
Miscellaneous maundering
Updates on my research and expository papers, discussion of open problems, and other maths-related topics. By Terence Tao
Representation theory, geometry and whatever else we decide is worth writing about today.
Derek Wise's blog: Mathematics, Physics, Computing and other fun stuff.
Born to be Wild
General abstract nonsense. 