Welcome to the Ninth Linkfest. This time around, I am experimenting with splitting the “Technical” links up into two parts: “Technical But Followable”, and “Technical (Harder to Follow)”. This is of course, pretty subjective. Due to my own focus, stuff about logic is obviously easier for me to follow, while stuff about (say) Lie groups is harder for me to follow and hence more likely to end up in the latter grouping. But hopefully my bias shouldn’t be too different from most peoples’. After all, it’s an undisputed fact that mathematical logic is the most beautiful field of math
The previous linkfest is here: Eighth Linkfest
Technical (But Followable)
Scott Aaronson: What Alan Turing did for his PhD
Michael O’Connor: A Logical Interpretation of some bits of Topology
Emmanuel Kowalski: Cartain’s “Sur certains cycles arithmétiques”
Tom Leinster: Hadwiger’s Theorem
Richard Lipton: NP-Intermediate?
The Physicist: What does a measurement in quantum mechanics do?
Technical (Harder to Follow)
John Bamberg: New locally 9-arc-transitive graphs!
Julien Cassaigne, James D. Currie, Luke Schaeffer, and Jeffrey Shallit: Avoiding Three Consecutive Blocks of the Same Size and Same Sum (arXiv)
Tanya Khovanova: Complexity of Periodic Strings
Steven Sam: Do the rank k matrices form an affine variety?
David Speyer: Why graded bi-algebras have antipodes
Terence Tao: Two small facts about Lie groups
Qiaochu Yuan: The Representation Theory of SU(2)
Gavin Andreson: Bitcoins worth more than the computer they are stored on
Avoision: The clock in the mountains
Diana Barnes-Brown: TJ Maxx flunks old school
Blogstrapping: An Open Letter To Barnes & Noble About Text Files
Jelle Bruinsma: The Battle for Syntagma
Delta: On Tau (on the movement to replace pi with 2*pi)
James Feudo: Will Facebook still be around in five years?
Lance Fortnow: Quantum TiVo
The Futurist: The End of Petrotyranny
Bradley Garrett: An open letter to the British Transport Police
Rhys Jones: A new approach to printing metals
Khatzumoto: Top 10 Great Japanese Movies from 1998 to 2008
Melanie Laffin: “The Pigeonhole Principle” (or: On Academic Over-Specialization)
Alex Papadimoulis: Trans-Atlantic Time Trap, Supported Image Formats, The Dreaded Zebra, and The Un-Fix
Sudip Paul: My First Teaching Experience
Sam Shah: Taught Curriculum vs. Learned Curriculum
Peter Woit: Higher Speculations (a look back at “vortex theory”, the 19th century equivalent of string theory)
Art, Photography, etc.
Avoision: Crazy Hail Storm in Logan Square
Freddie Wong: Man vs. Katamari (YouTube)
Nick Yates: Buffalo!