Green's theorem (was: Re: Worldmap mercator projection - Latitude to Y calculation. - last try

On Tue, 27 Jan 2026 04:58:03 -0500
Paul <[email protected]> wrote:

> On Tue, 1/27/2026 3:59 AM, Daniel70 wrote:
> > On 26/01/2026 11:43 pm, J. P. Gilliver wrote:
> >> On 2026/1/26 11:13:59, Daniel70 wrote:
> >>> On 26/01/2026 2:01 am, R.Wieser wrote:
> > 
> > <Snip>
> > 
> >>>>> Isn't language fun!
> >>>>
> >>>> Almost as funny as math.  :-(
> >>
> >> Well, I enjoy it. (Can't really help it in my family - both parents were
> >> language teachers and brother works for the dictionary.) And I do enjoy
> >> _some_ maths (UK spelling!) too.
> > 
> > As much as it grates on me, I can, sort of, accept the Yank 'Math' ... I mean the full word IS 'MathematicS' and, if you were going to truncate it by dropping the tail-end, then ALSO dropping the 's' makes sense ..... but it sounds so awkward!!
> 
> If you were on campus, you would soon get used to acronyms
> and abbreviations and shorthands.
> 
> Such shorthands are more popular with STEM students. Hahaha.
> 
>    https://en.wikipedia.org/wiki/Science,_technology,_engineering,_and_mathematics
> 
> You can learn many things at university, but a common joke when discussing
> what courses to take, would be "Have you considered Basket Weaving...".
> See, there really is such a thing. But that would not be shortened
> to Bask101. I think you can imagine how such a persons office at
> work would be decorated when they graduated.
> 
>     https://carleton.ca/indigenous/avpii/wp-content/uploads/doublewoven-baskets-1200x900-1.png
> 
> I had an applied math professor, where the office he had, had farm tools
> in it. A piece of a plow. Various odds and ends you might find in a barn.
> We never asked the guy what that was all about, because the
> conversation "might become uncomfortable". And you wouldn't
> want to be chased down a hall, with a pitchfork. He was one of
> my favorite characters because he could derive *everything*
> from first principles. He would start at 10AM with a yellow
> pad of quad-rule paper, and derive Greens Theory, and for the
> 1PM class, he would put a solid ten pages of notes on the
> blackboard (in one hour). In other words, he did not work from "canned notes".
> The ink was still wet at 1 PM.

I recall a tale from my Applied Maths tutor, that Green himself
re-invented his stuff daily, after a hard night on the booze and
the miller's daughter. 
Tales like that livened up maths lectures a bit.
> 
> I had to buy a special "high speed pen", just to keep up with him
> on note-taking. That's one class you could not arrive with your
> Rapidograph (that's a favoured tool of Physics students).
> That kind of pen is just too slow.
> 
>    https://bijansartstudio.ca/product/koh-i-noor-rapidograph-artist-and-technical-pen-1-0-50/
> 
>       Paul


-- 
Bah, and indeed Humbug.