[D] '19-Sep-15 ..
[ ] '22-Oct-22 Langlands-pictorial-20221020.pdf
[ ] '12-Jun-23 Langlands-pictorial-20230712.pdf       (Newer variant, but the Gal=D₄ stuff is in flux — and may be in big disarray.)
[ ] '12-Jul-23 handouts-for-Langlands.zip             (Extract in the same directory as the PDF file)
[ ] '23-Sep-12 Gauss-missed-2023-09-12.pdf            Very preliminary (and only 90% complete) notes on the new chapter
[D] '21-Jan-08 old

Changes

2019-12-19:	The chapter on gaping holes is more or less complete
	now — but not optimized for reading yet.

2020-03-20:	Macros and header: synced to the main track.
Cosmetic changes.

Fixup of the beginning (Ni.St. etc.).
What knowledge of Fourier is required?

Explanation of the (invisible) cancellation of square root.

Start a section on ζ-function.
Why should we not expect deg=4 to be similar.
(D₄ is a more complicated non-distilled.)

Code to find “runs”.

2021-01-08:	The promised handouts added (finally!).

2021-03-10:	Rename the main file.

Make “hidden symmetries” yet more prominent (including the title).
Restructure and add new material for another evidence-based chapter (deg=4, D₄, abelian, etc).
Start to consolidate “validation” into yet another Appendix.

Fix dangling and mis-coded references.

2021-06-03:	Move the old variants to old.

2021-06-04:	Add a ZIP file with exercises (mostly for the first 2 chapters; see README-exercises inside).
		(Extract to the same directory as the main PDF file for the hyperlinks in it to work.)

2022-10-20:	One more handout in the ZIP file with handouts.
		Massage the first chapter strongly.
		Extend the exercises and incorporate them into the PDF file.  Use them in the first two chapters.
		Cosmetic changes.
			(To make links in the PDF file work, extract the ZIP file with handouts
			 into the same directory as the PDF file.  Or view the PDF above in your browser.) 

2023-07-12	Add README to handouts-for-Langlands.zip.

2023-09-12	Add the notes on the “Gauss-missed” chapter.

See also the older version of this index.