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
* UmbralRaptor
did not know that you could get a matrix from the dot product of two vectors
<SnoopJeDi>
I think that's the wrong reading there? g_AB is a single entry in a matrix, right?
<SnoopJeDi>
like, the first equation tells you the entire structure of the matrix ("you tell me A and B and I'll tell you a number"), and the second one is...just g, I think?
<SnoopJeDi>
(pretty obnoxious that A,B are used for both unnormalized vectors *and* indices?)
<mlbaker>
you can get a rank one matrix from the outer product of two vectors...
<UmbralRaptor>
yeah, summation convention >_<
<SnoopJeDi>
yea, the outer product lets you go "up" in rank
<SnoopJeDi>
which is why it's "outer"...uhh, and by "rank" I mean tensor order, not the linear algebraic meaning (dammit math)
<UmbralRaptor>
asdadfsgsd
<SnoopJeDi>
hmm, not sure what kind of product asdadfsgsd is
<UmbralRaptor>
qwerty subtype of the keyboard mash product
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<_whitenotifier-3d18>
[Principia] misiektw opened issue #2121: Add direct values input apart from sliders. - https://git.io/fjIwA
<_whitenotifier-3d18>
[Principia] TheEventHorizon opened issue #2122: Failed to load assembly errors on start up - https://git.io/fjIrL
<_whitenotifier-3d18>
[Principia] pleroy commented on issue #2122: Failed to load assembly errors on start up - https://git.io/fjIKd
<_whitenotifier-3d18>
[Principia] pleroy closed issue #2122: Failed to load assembly errors on start up - https://git.io/fjIrL
<_whitenotifier-3d18>
[Principia] eggrobin commented on issue #1964: Support KSP ManeuverNodes as an API in Principia - https://git.io/fjIiA
<_whitenotifier-3d18>
[Principia] eggrobin closed issue #1964: Support KSP ManeuverNodes as an API in Principia - https://git.io/fx0YY
<kmath>
<whitequark> guys in my mentions like "if your comments are so important go write a book 😂" but if you work with something as ba… https://t.co/2UOHbUPV4C
<egg|work|egg>
whitequark: ow, twitter links don't work when uppercased
<whitequark>
how the hell do you remember these things
<egg|work|egg>
whitequark: I put a reminder in my calendar for this,
<egg|work|egg>
whitequark: lolwat, the all-caps link works on mobile but not desktop
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<UmbralRaptop>
There's an uncomfortably high probability that I will be arguing with a teacher because he doesn't realize that 64bit floats are common now (and apparently 64bit consumer hardware started showing up before the top quark?)
<e_14159>
UmbralRaptop: Argue that 16bit float hardware has now appeared? :P
<e_14159>
More serious answer: Does it help you to prove them wrong?
<UmbralRaptop>
possibly
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<e_14159>
UmbralRaptop: I'm trying to train myself to confront people less on such things (and more on others...), and to let them discover it for themselves. Whether it's actually possible or useful, I don't know.
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<SnoopJeDi>
e_14159, I have followed a similar realignment of my priorities in interpersonal interactions and wow holy moley I can say for sure it's been useful to me.
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<_whitenotifier-3d18>
[Principia] misiektw commented on issue #2121: Add direct values input apart from sliders. - https://git.io/fjI78
<_whitenotifier-3d18>
[Principia] misiektw edited a comment on issue #2121: Add direct values input apart from sliders. - https://git.io/fjI78
<_whitenotifier-3d18>
[Principia] pleroy commented on issue #2121: Add direct values input apart from sliders. - https://git.io/fjI5C
<_whitenotifier-3d18>
[Principia] pleroy edited a comment on issue #2121: Add direct values input apart from sliders. - https://git.io/fjI5C
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<egg|cell|egg>
!wpn
* galois
gives egg|cell|egg a boron weighted woomera
<egg|cell|egg>
Whitequark: why the third of April anyway
<whitequark>
absolutely no idea
<whitequark>
i forgot that i made that tweet even
<whitequark>
long ago
<e_14159>
SnoopJeDi: Well, I'm still in the process of trying to do so; but it's good to hear it's worthwhile.
<SnoopJeDi>
I think it's a priority thing
<SnoopJeDi>
"What's the best imaginable outcome of this activity? Is _that_ even my goal? If not, this is probably not in line with my values."
<mofh>
bloody hell this week is being absolutely insane
<egg>
mofh: are you around
<egg>
mofh: can you look at Symmetric multistep methods over long times, look at the paragraph following equation (2.1), look at the reference to (2.1) in 5.1, and figure out what convention they are using for the order of a difference formula