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3:01 PM
@Icosahedron What about it?
@ACuriousMind Is there anything worth blackmailing you over?
 
@0celo7 No, that's why I put it in quotes, but it sounds like "Reopen my question, or I will continue to get on your nerves". Hm, probably not blackmail. Extortion?
 
@ACuriousMind That's a shame.
@ACuriousMind He's just being a child. "Give me cookies or I'll keep screaming."
 
@Danu Ohhhh, I thought you meant your comments under ACuriousMind's answer.
 
@0celo7 It's not very good.
 
@Icosahedron Why did you mention it then?
 
3:10 PM
I hadn't seen it before.
 
I hadn't either. It not being good is a decent enough reason for that.
Why isn't it good?
 
Nevermind that.
Why can't I use wald as a beginner again?
I read it a bit and it's great.
 
If you can't do the exercises in Zee, why would you do a harder book that assumes that knowledge?
 
I can learn the math elsewhere.
from a math book.
 
Do you have a firm grasp of special relativity in tensor notation?
 
3:13 PM
No.
I remember you saying that wald doesn't cover SR.
 
That is true.
 
I suppose I'll read about SR elsewhere before I begin.
 
Like Carroll.
 
Do you mean, like Carroll as he does not cover SR, or like Carroll as a book to learn SR from?
 
It's a great book to learn GR and SR from.
 
3:17 PM
Fine.
Though if I abandon Zee, am I missing out on anything?
 
I haven't read large parts of Carroll, so I'm not sure. I don't think Carroll covers the stuff in chapter X of Zee.
In any case, abandoning a book because you don't like the format is not a good reason.
 
...sigh.
Fine I'll read Zee, final decision.
 
The only book that uses a theorem-proof style is HE.
 
I look forward to it.
Though for now, I need to read Zee.
 
Don't. These proofs are so vague.
 
3:29 PM
@HDE226868 I even linked it :P
@Icosahedron Read Carroll!
Carroll does QFT in curved spacetime!! :D
 
@Danu In chat? I can't see anything in the comments.
 
In chat, yes
 
There. I see now.
 
4:18 PM
@ChrisWhite Lemma 4.5.6 is satanic. The comment "The first and third terms vanish as $\gamma(t)$ is an unbroken geodesic" is misleading as hell because those aren't the only terms that vanish as a result of that. They just don't bother mentioning the others!
As a result, I spent 30 minutes trying to figure out why $$\frac{\mathrm{D}}{\partial u_2}\frac{\partial}{\partial u_1}=0$$ since that's the part common to the terms they mention. Turns out that's not zero and they vanish because of other reasons.
 
 
1 hour later…
@KyleKanos : Sad. A car crash. Related MO.SE post: mathoverflow.net/q/207477/13917
 
6:00 PM
0
Q: Requesting reopening of question

PrathyushPlease reopen the question. Physics-based derivation of the formula for entropy I have complied with David Z requestion indicated in the comments.

 
 
1 hour later…
7:01 PM
I've found that this is very reliable in determining rain, more than weather forecasts.
 
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