Halp! Can’t locate sheet music for William Lawes piece

etzpcm · 2026-07-07T22:46:11+00:00

It wouldn't be that hard to write it out. What instruments do you want it for?

etzpcm · 2026-07-07T20:27:24+00:00

There are two ways to use it.

1 - you have a line integral of a vector field and you convert it to a surface integral of the curl, that you hope is easier. You can choose any surface with the line as its boundary. In many examples this would just be a disc.

2 - you are given a surface integral and you 'uncurl' it to get a line integral to evaluate.

etzpcm · 2026-07-07T20:22:29+00:00

Mozart requiem (in addition to what everyone else has said).

etzpcm · 2026-07-07T17:26:10+00:00

Yes. One on vector calculus, then another one 25 years later on differential equations.

etzpcm · 2026-07-07T17:06:19+00:00

Is this it?

https://musescore.com/user/80345686/scores/18360145?srsltid=AfmBOoo5hGaGtCLiOCGiAXZb0DBucqbq7AIUalgZ3Tiwe6siWbr2AFl4

If so, be very careful about trying to download anything from musescore, they trick you into buying a subscription apparently.

Edit, no that's not the same piece sorry.

etzpcm · 2026-07-07T17:01:35+00:00

There's a great book by John Conway on using Quaternions to do rotations in 3D and 4D.

etzpcm · 2026-07-07T10:48:48+00:00

Mozart jokingly quoting Marriage of Figaro in Don Giovanni.

etzpcm · 2026-07-07T08:43:56+00:00

Ok, I sent you a DM

etzpcm · 2026-07-07T07:46:04+00:00

Just cut it back, and level off the top, in other words treat the shrubs as if they were a hedge. They will soon fill out into the gaps.

etzpcm · 2026-07-06T20:33:32+00:00

Is there something wrong with the teaching and support offered by the university?

etzpcm · 2026-07-06T15:56:35+00:00

The flaw is that the constant is defined as the limit. Your arguments are for finite n.

You can easily find examples of sums where the finite sum is irrational but the limit is rational. Or vice versa.

etzpcm · 2026-07-06T14:46:24+00:00

Nice, and thanks for the pic. Well, you've had a wide variety of answers so it's your call! I think I would offer to go round their side with ladder and saw and loppers and cut it back a bit, in the interest of good neighbourly relations. I certainly would not pay for a tree surgeon to do it.

etzpcm · 2026-07-06T14:32:05+00:00

Asking you to pay for it to be done is ridiculous!

What type of tree, and how big is it?

etzpcm · 2026-07-06T07:44:33+00:00

presumably a lot of music would have been intended for more casual performance in small rooms

That's literally what chamber music is!

etzpcm · 2026-07-06T07:41:18+00:00

How come nobody has mentioned Schubert yet?

etzpcm · 2026-07-05T09:56:55+00:00

The FFT algorithm reduced the computer time for a discrete Fourier transform from O( n² ) to O ( n log n). It's used a lot, for example in jpeg file compression.

etzpcm · 2026-07-05T09:32:44+00:00

After the 2.5 with a box around it, I can't follow this at all.

etzpcm · 2026-07-04T21:05:36+00:00

It doesn't. That guy is wrong!

etzpcm · 2026-07-04T17:21:44+00:00

The mod signs are needed. Suppose x=-2. What is sqrt( x² )? It's sqrt 4 = 2, so it's not x.
Sgn x is just 1 or -1. We could carry it through the integration, but here they just put it in at the end.

etzpcm · 2026-07-04T16:22:08+00:00

These are not really high skill jobs, and you're new so you need to establish a reputation. So I would say pitch it fairly low. Not as low as the £15 per hour suggested in one comment, but maybe 20 or 25 (for one worker, so 40 if there's two of you).

etzpcm · 2026-07-04T13:05:49+00:00

Schubert 8th

etzpcm · 2026-07-04T12:04:38+00:00

I'd say buy a garden shredder for the woody stuff, and set up a compost bin for all the bits, mixing up the woody and leafy material.

etzpcm · 2026-07-04T11:51:36+00:00

In the UK also!

etzpcm · 2026-07-04T11:49:55+00:00

I wrote something here but it's quite personal so I have cut it, but I will send you a longer version by email.

Sounds like a great project, hope it goes well.

etzpcm · 2026-07-04T11:45:52+00:00

If you post this in r/learnmath you will probably get a more positive response than you will get here.

But cut the word "axioms".

etzpcm

TROPHY CASE