http://mathphysics.net/tel Thoughts on mathematics, physics and other stuff. Sat, 03 Nov 2007 09:18:31 +0000 http://backend.userland.com/rss092 en I just took the Springer GTM test and it turns out that I'd be Lickorish's Intro to Knot Theory. It's uncanny - my honour's thesis was a mishmash of knot theory, quantum groups and DNA topology. If I were a Springer-Verlag Graduate Text in Mathematics, I would be ... http://mathphysics.net/tel/archives/50 My friend and gifted mathematical physicist David McAnally died suddenly last week. I attended David's funeral today. It's hard to believe that he's gone. It hadn't ever crossed my mind that this shy, gentle man, who loved mathematics and physics would pass on so soon. David was 44. For the last ... http://mathphysics.net/tel/archives/48 The ESA reports on this spectacular lensed quasar image obtained by the Hubble space telescope. This is the first time a 5 times lensed object has been discovered. Gravitational lensing results in an odd number of images - but some images are very weakly magnified and difficult to see, especially if ... http://mathphysics.net/tel/archives/47 Sometimes, when Google has one of those seasonal logos I click on it - to see what it's about. Just now I noticed that the Google logo has a red planet with some little aliens representing the first "O" in Google. Out of curiosity I clicked on it, the ... http://mathphysics.net/tel/archives/42 I seem to get a fair number of hits querying the basic formulas for velocity, so I've decided to post them. Let [tex]\cal{O}[/tex] be an object moving along a path. The position of the object [tex]\cal{O}[/tex] is a function of the time [tex]t[/tex]. We denote the position vector [tex]\bold{x}(t)[/tex]. The time ... http://mathphysics.net/tel/archives/40 The first time I saw the axioms for tensor products of vector spaces I was confused to say the least. I kept thinking about why the particular axioms were chosen. Recently I have developed a better understanding of where the axioms come from. We begin our considerations with 2 by 2 ... http://mathphysics.net/tel/archives/26 Einstein's letters credit Greek maths expert's work, Greece and Israel say from PhysOrg.com ATHENS (AFP) - Greece has received copies of letters by Albert Einstein which suggest that the work of an unheralded Greek mathematician helped shape some of his theories, Greek and Israeli officials said. Israel's ambassador to Athens, ... http://mathphysics.net/tel/archives/36 Professor Rodney Baxter, from the Mathematical Sciences Institute at ANU, received both the 2006 Onsager Prize of the American Physical Society (APS) and the separate Onsager Lectureship and Medal for 2006 from the Norwegian University of Science and Technology. Both prizes are named for widely respected theoretical physicist and Nobel Laureate ... http://mathphysics.net/tel/archives/35 The supersymmetric t-J model is a mathematical model of strongly correlated electrons. Analytical solutions to integrable models provide insight into the dynamics of systems of strongly correlated electrons. Recently, the search for a theory explaining high Tc superconductivity has resulted in increased interest in integrable models describing correlated electrons. ... http://mathphysics.net/tel/archives/34 I manage a server that hosts multiple websites and serves over 100 Gigs of content per month. This month's stats show that Firefox accounts for 18 % of all hits. In January Firefox accounted for just 5 % of all hits, by June it accounted for 10.8 % of hits. ... http://mathphysics.net/tel/archives/33