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Feb 17, 2022 at 19:23 vote accept Praphulla Koushik
Dec 12, 2021 at 15:04 comment added unknownymous I'm not sure about what the best reference is. About the map in the second part: the anchor is the map $\rho: At(E) \to TM$. When we view $At(E) \cong T(GL(E))/GL(n)$, this is the derivative of the projection map $GL(E) \to M$ (this is what you wrote as $TP/G \to TM)$. When we view $At(E)$ as the space of first-order differential operators, then $\rho(D)$ is the symbol of $D$. In fact, $At(E)$ doesn't contain all first-order differential operators, only the ones whose symbol is a vector field.
Dec 12, 2021 at 5:14 comment added Praphulla Koushik Hi. Thanks for your answer.. I understand most of the first half of it.. Please see if you can suggest some reference to read more about what you said... For the second part, I am not sure how to see it... "this is the map you constructed in your question".. What are you referring to here?
Dec 11, 2021 at 20:17 history edited unknownymous CC BY-SA 4.0
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Dec 11, 2021 at 20:11 history answered unknownymous CC BY-SA 4.0