User user4 - MathOverflow most recent 30 from http://mathoverflow.net 2013-05-25T23:47:21Z http://mathoverflow.net/feeds/user/7626 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/62770/what-mathematical-treatment-is-there-on-the-renormalization-group-flow-in-a-space What mathematical treatment is there on the renormalization group flow in a space of Lagrangians? user4 2011-04-23T19:48:46Z 2013-04-12T10:41:03Z <p>What mathematical treatment is there on the renormalization group flow in a space of Lagrangians?</p> http://mathoverflow.net/questions/86583/geometric-treatment-of-the-ward-takahashi-identity Geometric treatment of the Ward-Takahashi identity user4 2012-01-24T22:44:11Z 2013-03-12T20:22:00Z <p>The quantum field theory generalisation of Noether's theorem about symmetries and conservation laws is the Ward-Takahashi identity. What is a suitable treatment of this in the context of differential geometry and a modern setting? Thanks</p> http://mathoverflow.net/questions/69055/reference-for-noethers-theorem reference for Noether's theorem user4 2011-06-28T21:21:56Z 2012-05-21T09:20:43Z <p>What is a good reference for a geometric version of Noether's theorem about Lagrangians, symmetries and conserved currents?</p> http://mathoverflow.net/questions/62812/references-for-grothendiecks-pursuing-stacks-and-esquisse References for Grothendieck's "Pursuing Stacks" and "Esquisse" user4 2011-04-24T07:00:29Z 2011-04-24T09:26:42Z <p>Where can I find Grothendieck's "Pursuing Stacks"/"A la poursuite des champs" and "Esquisse d'un programme"?</p> http://mathoverflow.net/questions/52164/where-can-you-find-grothendiecks-recoltes-et-semailles where can you find Grothendieck's "Recoltes et Semailles"? user4 2011-01-15T12:31:51Z 2011-01-15T12:42:22Z <p>Where can you find Grothendieck's "Recoltes et Semailles"? Is it available anywhere?</p> http://mathoverflow.net/questions/33717/literature-on-geometrical-viewpoint-on-calculus-of-variations-for-physics literature on geometrical viewpoint on calculus of variations for physics user4 2010-07-28T21:26:39Z 2010-07-28T23:21:53Z <p>What is a good reference for a geometrical viewpoint on the calculus of variations for physics, using differential forms etc. to derive Yang-Mills equations and other topics of the standard model? Thanks for ideas.</p> http://mathoverflow.net/questions/69055/reference-for-noethers-theorem/69102#69102 Comment by user4 user4 2011-06-29T20:02:56Z 2011-06-29T20:02:56Z this sounds like a kind of approach which would be natural - do you know of any references on the web to this? http://mathoverflow.net/questions/62770/what-mathematical-treatment-is-there-on-the-renormalization-group-flow-in-a-space/62775#62775 Comment by user4 user4 2011-04-25T22:15:02Z 2011-04-25T22:15:02Z Yes this is a good example http://mathoverflow.net/questions/52164/where-can-you-find-grothendiecks-recoltes-et-semailles/52166#52166 Comment by user4 user4 2011-01-15T13:33:05Z 2011-01-15T13:33:05Z amazing.. thanks. http://mathoverflow.net/questions/33717/literature-on-geometrical-viewpoint-on-calculus-of-variations-for-physics/33723#33723 Comment by user4 user4 2010-08-22T21:21:12Z 2010-08-22T21:21:12Z this is very useful http://mathoverflow.net/questions/33717/literature-on-geometrical-viewpoint-on-calculus-of-variations-for-physics Comment by user4 user4 2010-08-22T21:20:12Z 2010-08-22T21:20:12Z thanks, I will look at those references