raptop changed the topic of #kspacademia to: https://gist.github.com/pdn4kd/164b9b85435d87afbec0c3a7e69d3e6d | Dogs are cats. Spiders are cat interferometers. | Космизм сегодня! | Document well, for tomorrow you may get mauled by a ネコバス. | <UmbralRaptor> egg|nomz|egg: generally if your eyes are dewing over, that's not the weather. | <ferram4> I shall beat my problems to death with an engineer. | We can haz pdf
<kmath>
<kelaher> @FakeUnicode @DrEugeniaCheng @johncarlosbaez You know not mathematicians. They are the funniest folk imaginable. https://t.co/XHpVcFCzTJ
<egg|zzz|egg>
bofh: meeeooow
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<UmbralRaptor>
Hrm. This SR, not QM. But there are matricies.
<UmbralRaptor>
…braket notation for relativity!
<egg|zzz|egg>
UmbralRaptor: and index notation for QM!
<egg|zzz|egg>
cc bofh
<UmbralRaptor>
😈
<UmbralRaptor>
This matrix is clearly hermitian also.
<UmbralRaptor>
(well, for β < 1)
<egg|cell|egg>
Bofh: mrow
<B787_300>
UmbralRaptor: i think i prefer Proof by inaccessible literature... which some librarians through dark magic have access to
<UmbralRaptor>
Thankfully we also have the other bird website.
<B787_300>
DuckDuckGo?
<UmbralRaptor>
sci-hub >_>
<B787_300>
is their logo a bird?
<UmbralRaptor>
A corvid holding a key.
<B787_300>
so a very smart bird
<UmbralRaptor>
yep
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<kmath>
<fioraesoterica> you know what’s bullshit? uncountable sets of measure zero
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<UmbralRaptor>
"Scientists originally thought that radio and microwaves were found only on Earth, and only in laboratories."
<UmbralRaptor>
o_O
<UmbralRaptor>
Fun fact: Jansky's 1933 paper is paywalled.
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<UmbralRaptor>
'In 1962 a panel of renowned U.S. astronomers and physicists advised NASA that “infrared observations from satellites of celestial objects should be given a low priority.”'
<UmbralRaptor>
oops
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<whitequark>
lo
<whitequark>
*lol
<egg|zzz|egg>
mrow
<_whitenotifier-1656>
[Principia] nikolain commented on issue #2056: Crash when craft breaks in atmosphere with explosions in KSP 1.3.1 with RP-1 (Erdos) - https://git.io/fhEMJ
<_whitenotifier-1656>
[Principia] nikolain opened issue #2066: Instructions for building Principia from master - https://git.io/fhEMy
<_whitenotifier-1656>
[Principia] eggrobin commented on issue #2066: Instructions for building Principia from master - https://git.io/fhEDO
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<_whitenotifier-1656>
[Principia] eggrobin commented on issue #2066: Instructions for building Principia from master - https://git.io/fhEDj
<_whitenotifier-1656>
[Principia] eggrobin opened pull request #2067: Try to make the SAS more reliable - https://git.io/fhESS
<egg|zzz|egg>
Hm, I have a copy of that one already
<egg|zzz|egg>
ah but it's the preprint
<_whitenotifier-1656>
[Principia] eggrobin commented on issue #1841: Show ☊ and ☋ with respect to the equator in body-centred inertial frames - https://git.io/fhEQ2
<_whitenotifier-1656>
[Principia] eggrobin commented on issue #1841: Show ☊ and ☋ with respect to the equator in body-centred inertial frames - https://git.io/fhuUr
<egg|zzz|egg>
bofh: because the proper one wasn't used for very long :-p
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* raptop
stabs umbralraptor in the wifi
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* bofh
attempts to stab self into functionality again
<egg|cell|egg>
Bofh: swat, not stab
<bofh>
ooh, good idée
<bofh>
less painful, higher chance of working, less chance of bleeding out and dying.
<egg|cell|egg>
Bofh: *swat*
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<egg|zzz|egg>
bofh: meow
<bofh>
meow
<bofh>
okay, after food I can think again. rootn time.
<egg|zzz|egg>
bofh: btw have you uploaded all your blackcatpics
<bofh>
negatory, I still have a lot of pics to upload
<_whitenotifier-1656>
[Principia] pleroy labeled pull request #2067: Try to make the SAS more reliable - https://git.io/fhESS
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<_whitenotifier-1656>
[Principia] eggrobin closed issue #1868: Plotting Frame's interaction with stock SAS is inconsistent - https://git.io/f4FKp
<_whitenotifier-1656>
[Principia] eggrobin pushed 5 commits to master [+0/-0/±5] https://git.io/fhumn
<_whitenotifier-1656>
[Principia] eggrobin 2181ee8 - traces and confusion
<_whitenotifier-1656>
[Principia] eggrobin d06ea57 - this fails to make sense, but it appears to fix the bug?
<_whitenotifier-1656>
[Principia] eggrobin 48d27b1 - clean it up a bit
<_whitenotifier-1656>
[Principia] ... and 2 more commits.
<_whitenotifier-1656>
[Principia] eggrobin closed pull request #2067: Try to make the SAS more reliable - https://git.io/fhESS
<egg|zzz|egg>
bofh: UmbralRaptop ^ I have good commit messages,
<raptop>
egg|zzz|egg: But have you Stabilized the Arthropod System?
<egg|zzz|egg>
maybe
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<egg|zzz|egg>
bofh: extremely lɒl at the second paragraph of page 69 of that volume of Astronomische Nachrichten btw
<APlayer>
Just to clarify - a * log(b x) = log(b x + e^a)?
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<APlayer>
No, it's in fact not
<bofh>
egg|zzz|egg: rofl
<egg|zzz|egg>
bofh: are you rofling at Astronomische Nachrichten or at the commit messages
<raptop>
APlayer to confirm: a * log(b x) = log( (b x)^a )
<APlayer>
...oh.
<APlayer>
I see, thank you
<APlayer>
a + log(b x) would have been log(b x * e^a), I mixed up the operators
<raptop>
yeah
<APlayer>
So if log "converts" + to * and * to ^, what happens with ^? If you do a^log(b x), you eliminate the exponentiation and the log and end up with some factor I am too lazy to calculate. But why? I mean, + and * are being "stepped up", if that's a way of expressing it. And ^ is just being eliminated? Or am I thinking wrong when I say you want a^log?
<raptop>
I think you need additional operators (ping the mathematicians?). I, uh, don't know where you'd run into an a^log(f(x)), though I suppose that there's a chance of log(f(x))^a.
<mlbaker>
it's more accurate to say log converts * to +. exp converts + to *.
<APlayer>
Well, yes
<mlbaker>
it converts * to ^ kind of because it has to
<mlbaker>
ugh
<mlbaker>
i mean, it converts ^ to *
<mlbaker>
^ is iterated multiplication: log(c^n) = log(c*c*...*c) = [log c]+...+[log c] = n log c
<APlayer>
Everything in maths happens because it has to :P
<bofh>
egg|zzz|egg: commit msgs
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<egg|zzz|egg>
hm, maybe I vaguely understand the sidereal month
<egg|zzz|egg>
one has sidereal month = 1 / (1/moth + 1/moth_period), where moth is either the anomalistic or draconic month and moth_period the period of the corresponding precession
<tawny>
I thought I understood the sidereal month but NOW I don't haha