hfeed2atomNotesfrom Jul, 2017/notes2017-07-18T14:16:52-04:00“get to know it, understand it, and respect it”/notes/get-know-it-understand-it-and-respect-it2017-07-18T14:16:52-04:002017-07-18T14:16:52-04:00“get to know it, understand it, and respect it”yes, https://en.wikipedia.org/wiki/Homogeneous_spa.../notes/re-homogenous-space2017-07-15T17:41:53-04:002017-07-15T17:41:53-04:00yes, <a href="https://en.wikipedia.org/wiki/Homogeneous_space#Homogeneous_spaces_as_coset_spaces">https://en.wikipedia.org/wiki/Homogeneous_space#Homogeneous_spaces_as_coset_spaces</a> even though I don’t know what you mean by “isometry”.OK everyone, back to work. Quantum Gravity is not .../notes/back-to-work-physicists2017-07-11T14:00:36-04:002017-07-11T14:00:36-04:00OK everyone, back to work. Quantum Gravity is not going to figure itself out!In which signature is the “conservation of convent.../notes/re-conservation-of-convention-law2017-07-11T13:26:19-04:002017-07-11T13:26:19-04:00In which signature is the “conservation of convention law” stated?‘I know, I’ll use Latex macros’ Now you have two p.../notes/i-know-ill-use-latex-macros2017-07-10T23:09:46-04:002017-07-10T23:09:46-04:00‘I know, I’ll use Latex macros’ Now you have two problems (also see <a href="https://xkcd.com/208/">https://xkcd.com/208/</a> and <a href="https://xkcd.com/927/">https://xkcd.com/927/</a>)hopefully you are using the maths convention — phi.../notes/pullback-pushforward-notation-math2017-07-10T18:02:18-04:002017-07-10T18:02:18-04:00hopefully you are using the maths convention — phi_^* for pullback since it is a “dual map”there are worse convention-violations in GR; signa.../notes/worse-convention-violations-gr2017-07-10T17:25:00-04:002017-07-10T17:25:00-04:00there are worse convention-violations in GR; signature, Riemann tensor, extrinsic curvature… comparatively this is not a big deal!because it is consistent with the index positions .../notes/pullback-pushforward-notation2017-07-10T17:16:39-04:002017-07-10T17:16:39-04:00because it is consistent with the index positions for objects being pulled-back, forms, vs objects being pushed-forward, vectors.fantastic listening to @mauroranallo alongside @Mc.../notes/mr-nmcg2017-07-02T01:19:45-04:002017-07-02T01:19:45-04:00fantastic listening to @mauroranallo alongside @McGuinnessNigelgreat performance by Benedict Cumberbatch as Van G.../notes/like-painted-with-words2017-07-01T18:40:27-04:002017-07-01T18:40:27-04:00great performance by Benedict Cumberbatch as Van Gogh