In week293, catch up on recent papers and books about $n$-categories. Hear about last weekend's Conference on the Mathematics of Environmental Sustainability and Green Technology at Harvey Mudd College. And learn how to think of n...

In "week292", learn about Henry Paynter's "bond graphs" --- a branch of applied category theory still waiting to be understood.

In week291, listen to a crab canon on a Möbius strip, see how the Mandelbrot set mimics infinitely many Julia sets, and learn about 2-ports, 3-ports, and Poincaré duality for electrical circuits.

In "week290" of This Week's Finds, read about categorification in analysis. Ponder a number puzzle. Meet the five most popular 1-ports: resistances, capacitances, inertances, effort sources and flow sources. And learn a bit more ...

In "week289" of This Week's Finds, learn how E8 shows up in condensed matter physics. Continuing exploring the grand analogy between different physical systems! And learn about differential graded Lie algebras in rational homotopy...

In "week288", start exploring a huge set of analogies linking many branches of physics... and keep learning about rational homotopy theory. This time we'll tackle differential graded Lie algebras.

In "week287" of This Week's Finds, hear about the history of categorical logic, and continue learning about rational homotopy theory - especially Sullivan's approach based on differential forms.

In week286 of This Week's Finds, begin learning about rational homotopy! More will follow in Weeks to come...

In "week285" of This Week's Finds, discover the beauty of roots. Then, hear what happened on the second day of the session on homotopy theory and higher algebraic structures in the AMS conference at U.C. Riverside!

In "week284" of This Week's Finds, learn about the pentagon-decagon-hexagon identity, golden triangles, categorified quantum groups, the Halperin-Carlsson conjecture, real Johnson-Wilson theories, Picard 2-stacks, quasicategories, m...

See galaxies in visible, infrared and ultraviolet light. Read about who first discovered the regular icosahedron: Theatetus or the ancient Scots. And learn more about the geometry of the icosahedron!

In week282 of This Week's Finds, visit Mercury: Learn how this planet's powerful magnetic field interacts with the solar wind to produce flux transfer events and plasmoids. Then read about the web of connections between associative,...

In "week281" of This Week's Finds, learn about the newly discovered ring of Saturn, tilings with 5-fold and 10-fold quasisymmetry, and the latest news on quantum gravity from Corfu.

Hear about the courses Ashtekar and Rovelli taught at the quantum gravity summer school at Corfu.

I posted a shorter version of this earlier, but let me add an updated version. The September 29th runoff for NYC Comptroller pits John Liu, with a degree in mathematical physics and extensive financial experience, against David Yass...

The runoff for NYC Comptroller pits John Liu (with a degree in mathematical physics and extensive financial experience) against David Yassky (a lawyer and career politician with no financial experience, whose financial abilities are...

Today, the Editor of Journal of Mathematical Physics communicated to me that my paper on KAM tori reforming has been accepted for publication. This is one of the most prestigious journals in mathematical physics and the result is re...

In week279, read about division algebras and supersymmetry - and a bit about tuning systems and infinitely groupoidified logic.

In week278, hear how astronomers in a high desert in Chile use an "artifical star" to take photos of incredibly high resolution, and how this helped them spot what's happening on Betelgeuse. Read how red supergiants like Betelgeus...

Today I am back in my office and physics, that I never stopped to think of, is unfriendly urging in my mind. Besides my work as a reviewer for Mathematical Reviews that I try to do at my best, I have not forgotten to look around in ...