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Oct 10, 2015 at 2:02 vote accept Hugo Chapdelaine
Oct 10, 2015 at 0:12 history edited paul garrett CC BY-SA 3.0
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Oct 9, 2015 at 23:35 history edited paul garrett CC BY-SA 3.0
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Oct 9, 2015 at 23:34 comment added paul garrett ... oop, and, yes, after writing more, I would certainly want to acknowledge that much "physics-y thinking" went into the Lax-Phillips viewpoint, and certainly into Colin de Verdiere's, as well! I have long been a fan of aggressive heuristics coming from physical considerations. I don't pretend to appreciate E. Witten's more contemporary contributions, but Heaviside's and even more Dirac's are quite striking to me. And "solvable models". Such stuff is very inspiring, even if/when it does not come with proofs! :)
Oct 9, 2015 at 23:29 history edited paul garrett CC BY-SA 3.0
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Oct 9, 2015 at 22:50 comment added Hugo Chapdelaine I have in mind the book of Lax and Philips who applied scattering theory to the study of automorphic forms. In that book I saw for the first time a truncated version of the hyperbolic Laplacian which has a compact resolvent. Then from a key observation of Colin de Verdiere, one may apply the Fredholm analyticity theorem to obtain the analytic continuation and the functional equation. In any case, thanks again for your answer.
Oct 9, 2015 at 22:50 comment added Hugo Chapdelaine Dear Paul, thanks for portrait that you have brushed. Regarding your comment about Kubota's book I get your point but my feeling is that his book was probably the first comprehensive and accessible reference on $GL_2$-real analytic Eisenstein series for non-experts. Also in the nice portait that you just depicted, one should also probably mention the substantial contributions which came from physics and functional analysis.
Oct 9, 2015 at 21:43 history answered paul garrett CC BY-SA 3.0