# Request for errata for Automorphic Forms on GL(2)

Edit (7/21/2014): We have finished proofreading Jacquet-Langlands and posted it to Robert Langlands's publications site. If you would like a copy, please download it from here:

http://publications.ias.edu/rpl/paper/60

Many thanks to everyone who submitted comments. If you see any more errors, please let us know. My email address is my first initial and then my last name, without spaces or other characters in between, and then ias.edu.

End Edit---------

Hello everyone,

I'm currently proofreading Hervé Jacquet's and Robert Langlands's Automorphic Forms on GL(2) for future republication. I was wondering if some of you had noticed mistakes in it that we might correct.

Mathematical errors, misspellings, typos---any mistake, no matter how small, is welcome!

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Are you talking about the book by Jacquet and Langlands, or something else? – user30035 Feb 15 '13 at 22:54
Yes, I've just corrected the question text. Thank you, wccanard! – Anthony Pulido Feb 16 '13 at 23:52
My question may seem obvious, but did you ask Jacquet? One year he was teaching a course at Columbia on this book, and kept telling us half-jokingly how many errors he found in it. – Joël Feb 17 '13 at 3:33
Have you tried clicking on his user name? – stankewicz Jun 28 '13 at 13:48
@stankewicz while this works 'now (when you wrote your comment) I am not sure it worked at the time the original comment was written. – quid Jul 28 '13 at 17:59

Lemma 6.1 (ii) on page 111: .... if and only if $n \geq |p-q|$

I am not so sure about the following, which might stem from an unconventional notation only, which I might have overlooked:

page 271 (vi) .. $\pi i$ instead of $\pi$ in the function field formula

page 272 (vii): ... but $\frac{\log q}{4 \pi} \int\limits_0^{2\pi i/\log q} \dots$

similar for (viii)

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I just saw this. Thank you! – Anthony Pulido Sep 22 '13 at 12:54
My apologies for being so late! I think I see what you are referring to, but I wonder about which edition of GL(2) you are using? I looked on the site publications.ias.edu/rpl and in a copy of the printed Springer notes from 1970, but neither matches the page numbers you've given... – Anthony Pulido Mar 13 '14 at 21:16
In the first comment, related to Lemma 6.1(ii), do you mean that $n \geq a + b$ should be changed to $n \geq |p - q|$? – Anthony Pulido Mar 13 '14 at 21:19