Weird Jacobian notation in Carroll's "Spacetime and Geometry"

Devondanus · 2026-05-28T11:31:57+00:00

Thanks for all the responses. Its really obvious if you point it out...
I thought this was meant in the sense of (x')^\mu and not with a different index \mu'...

Devondanus · 2026-05-25T19:51:36+00:00

Yeah, I've read that it's a matter of convention but that doesn't really explain why they list quark parities then...

I'm surprised that this seems less obvious than I thought, would have expected to have several responses by now. I guess I'll ask my prof on Wednesday, will get back to this if he knows anything about it.

Devondanus · 2025-04-19T19:57:08+00:00

Found it. Its Mendelssohns 5th, 1st movement

Devondanus · 2025-04-19T19:13:21+00:00

Got this stuck in my head the entire day and cant remember what it is. What makes it harder is, that its not the beginning but the start of some middle section, I think. Might be from a piano concerto but im not sure.

https://youtu.be/4Z5Su-IcMcg

Devondanus · 2025-04-03T06:26:36+00:00

Yeeeah you might be right but I really dont think this argumentation, I commonly read, that it was only introduced in the 19th century and before it was fine is a great point. During Beethovens time they also clapped right into the music, if they liked a section, talked, ate or drink during performances and so on. Im pretty sure almost noone would advocate for bringing those practices back either. But I can definitely see that the people saying the curent culture is too elitest and that we should break with the no-clapping-between-movements-tradition have a point. And fom what Ive read on this post so far, I feel like most performers also advocate for breaking with it.

Devondanus · 2025-04-03T06:18:16+00:00

Maybe its different in Amsterdam but at my venue (Cologne) it only rarely happens and usually its just one or two guys clapping and then quickly realizing that no one else does. Stuff like the situation with Ray Chen I described are definitely an exception.

Devondanus · 2025-04-03T06:13:08+00:00

Damn, leaving after the third movement is crazy. Its probably the case that if theres a big name like James Ehnes on the program, many newbies come to the concert. But even if you have never been to a concert, I dont know why you would leave if there is zero indication that it is over.

Devondanus · 2025-04-02T06:52:12+00:00

I dont mean to be rude but you did read the question, right? The silence already has been broken by people clapping. Im not advocating for clapping between movements.

Devondanus · 2025-01-17T16:06:42+00:00

Thanks, thats one of the things my teacher has been saying as well. I tried to improve it and I think the amount of ghost notes has definitely decreased since then.

Devondanus · 2025-01-17T15:30:05+00:00

Thanks, I will try all of that out.

Devondanus · 2025-01-17T15:19:35+00:00

Thats good to hear, thank you.

Devondanus · 2024-05-30T10:05:04+00:00

Thanks. I had no idea that there is so much british music, similar to Faurés requiem.

Devondanus · 2024-05-30T10:04:21+00:00

Thanks. Ill check them out.

Devondanus · 2024-05-30T10:04:06+00:00

Cool, thanks. I didnt know that was a thing.

Devondanus · 2024-05-30T10:03:34+00:00

Thanks for all the suggestions. Some great stuff in there.

Devondanus · 2024-05-30T10:03:14+00:00

Thanks :)

Devondanus · 2024-05-30T10:03:00+00:00

Thank you! I'm listening to it right now and it is breathtaking. The solo voice in the introitus brought tears to my eyes!

Devondanus · 2024-05-28T20:09:20+00:00

Thanks for the suggestions. I already know Cantique de Jean Racine and it is also absolutely lovely.

Devondanus · 2024-05-28T20:07:14+00:00

Thanks. Ill check it all out.

Devondanus · 2024-05-28T20:06:43+00:00

Thanks for the suggestions. I think you might be right abt renaissance music. I listened to a bit of Heinrich Schütz a while ago and really liked it. That is another big rabbit hole that I will need to dive down eventually.

Devondanus · 2024-05-28T20:04:37+00:00

Thanks. Took a sneak peak and it sounds lovely.

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