UmbralRaptor 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> … one of the other grad students just compared me to nomal O_o | <ferram4> I shall beat my problems to death with an engineer.
<SnoopJeDi>
I like your Pi schematic! What's the occasion?
<SnoopJeDi>
although the staggered vertical alignment is making my brain go aaaAAAAAA
<Ellied>
I couldn't figure out a better way to put it, too little room ;_;
<Ellied>
Research showcase at the uni
<SnoopJeDi>
heh, that poster feel
<Ellied>
I think it's better than my last poster at least
<Ellied>
that one had a hand-drawn circuit diagram pasted to the middle of it
<Ellied>
tbqh I probably spent WAY too much time on that Raspberry Pi representation for the diagram, though. I actually measured a few things to get it as close to the right proportions as possible, and it should even print actual size on a 3'x4' poster
<SnoopJeDi>
technically correct best correct
<Ellied>
oh, and the GPIO header actually has 40 pins, because... uh, because.
<SnoopJeDi>
you should stick it up somewhere (the Commons, I guess?) with explicit CC if you'd care to share it!
<Ellied>
oh, thanks for the reminder! I was gonna add explicit CC.
<SnoopJeDi>
and in doing so I've just given myself a reminder that I should put their book on my kindle
<Ellied>
It's probably going to be put up in the basement along with the other posters when the showcase is over
<kmath>
<plutokiller> Look, man, you guys gotta get over the fact that since about 1860 Pallas has been considered an asteroid instead of… https://t.co/wQuMOY61SO
<bofh>
APlayer: yeah, it's Cat Exhibiting Meissner Effect, what about it? :P
<APlayer>
The fur looks superconductive indeed :D
<APlayer>
I wonder, how do cats keep themselves aerodynamically stable during their famous long leaps?
<APlayer>
I know they use conservation of momentum when they swing their tails for attitude control, but I mean they don't look particularly front heavy to begin with for a stable position
<Iskierka>
they use their whole body for attitude control
<UmbralRaptor>
(@mware is on strong painkillers from wrist surgery)
<APlayer>
Ah, sorry then
<APlayer>
Just a personal question, not related to anything. Will a Taylor series work on a function which at some order of differentiation has a discontinuity?
<egg|work|egg>
!wpn bofh
* Qboid
gives bofh a nilpotent 2N3906
<egg|work|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a SOX-compliant feather with a ferram4 attachment
<UmbralRaptor>
!wpn egg
* Qboid
gives egg a rho squirrel
<UmbralRaptor>
APlayer: everywhere but the discontinuity, yes. for dealing with it, ask egg|work|egg?
<APlayer>
UmbralRaptor: I mean, across the discontinuity
<APlayer>
If the discontinuity happens at x = 0 and you set your Taylor series up at x = 1, will x = -1 be reasonably correct, as far as Taylor series permit?
<APlayer>
I don't think it would, would it?
<bofh>
Taylor series converge in the disk centered at their expansion point out to the first discontinuity in the function.
<bofh>
(tl;dr proof: Cauchy's Integral Formula, just take a Laurent series).
<APlayer>
And what happens at the discontinuity and beyond?
<bofh>
so if it's centered at 1 and there's a nonremovable singularity at 0, then no, that particular expansion will not converge in neighbourhoods of -1
<egg|work|egg>
bofh: "at some order of differentiation has a discontinuity"
<egg|work|egg>
so it's C^k and not C^{k+1}
<APlayer>
^
<APlayer>
Not sure about what C^k means, though
<bofh>
egg|work|egg: um, holomorphic <=> analytic in \mathbb{C}
<egg|work|egg>
bofh: yes but whether the first k partial sums of the taylor series are useful is a different question from being analytic
<egg|work|egg>
the Taylor series clearly will not converge to the function (it's not C^infinity, thus not C^omega), but Taylor's theorem is still there
<APlayer>
That's interesting
<egg|work|egg>
the question "Will a Taylor series work" is arguably a tad vague
<bofh>
egg|work|egg: yes but if the full taylor expansion is divergent at a point then generally the first k partial sums of the *taylor* series won't be very useful.
<egg|work|egg>
!wpn bofh
* Qboid
gives bofh a subcritical squirrel
<egg|work|egg>
bofh: well, you can bound the remainder
<egg|work|egg>
(depending on how nuts the function actually is)
<SnoopJeDi>
Which doesn't necessarily make it useful :P
<kmath>
<ken_lunde> The “PanCJKV” IVD collection became very useful for a current task, specifically that “plain text” does the job. https://t.co/ESMWYfcDsD
<rqou>
"aliases the seven unsupported regions to the four supported ones, specifically MY/SG to CN, HK/MO/VN to TW, and KP/XK to KR"
<rqou>
wow, this guy actually knows wtf he is doing
<egg>
rqou: so Ken Lunde is good at this shit
<egg>
rqou: he makes one of the pan-cjk fonts (adobe's)
<Fiora>
I wonder what has led to the dominance of goal (specifically vs gas). there must be much higher natural gas prices in china than here (and ofc transport is expensive)
<bofh>
Fiora: but no, whitequark is right in that nearly all the bitcoin mining farms use hydroelectric power and not coal (in fact they're often outright built *next to* the power stations in massive farms to minimize transfer losses)
<bofh>
(also generally helps that the dams are in comparatively remote places and the land is dirt-cheap there so you can shove a few warehouses of mining ASICs there)
<Fiora>
yeah but power is fairly fungible
<Fiora>
insomuch as that electricity would likely have gone elsewhere
<Fiora>
yes there's transfer losses and such but it's not like someone built a gigawatt dam for bitcoin
<bofh>
so the Three Gorges alone generates 22.5GW (so, imagine a little over eleven Hoover dams).
<bofh>
and not exactly, but the hydroelectric projects are being disproportionately built near the Tibetan plateau and before the infrastructure to carry that to the populous areas is fully in-place. So in effect at least for the time-being, they kindasorta are.
<bofh>
(when you realize mining is also how you launder money out of China w/o hitting official Yuan exchange limits, this makes a lot more sense)
<FluffyFoxeh>
bitcoin mining is such a waste of resources
<Fiora>
bofh: yeah, of course
* egg
stares at Fiora's twitter bio
<egg>
okay on my windows laptop the grass radical is shown in 4 strokes for some reason
<whitequark>
Fiora: power in CN specifically *not* fungible
<egg>
Fiora: atop your cat
<whitequark>
is not*
<whitequark>
because they don't have a national grid
<bofh>
^
<whitequark>
in RU that would have been a better argument although because bitcoin is a very constant load it would just let baseline plants operate at higher levels
<egg>
Fiora: I assume you meant to write japanese but of course you can write only plain text in your bio and for some reason my computer decided to show me the grass radical in its HK or TW form on there
<egg>
CJKV unification is fun
<Fiora>
whitequark: ahhhhhh, i see.
* egg
has been driven slightly insane by looking into that this week
<whitequark>
FluffyFoxeh: you know what's *actually* a waste of resources? grain imports from South America, ~all of which goes into feeding pigs
<whitequark>
because apparently in CN eating pig meat means you're rich
<whitequark>
that has an enormous ecological footprint
<FluffyFoxeh>
meat is a waste of resources too
<FluffyFoxeh>
tbjh
<FluffyFoxeh>
tbh
<whitequark>
and it's only going to become worse
<whitequark>
well no
<Fiora>
hey, if you want to poke at the wasteful tuhao habits
<Fiora>
there's probably a LOT to go after :P
<whitequark>
meat eaten solely as a status symbol is
<bofh>
Fiora: yyyyyyyyyyyyyep
<whitequark>
Fiora: that is true
<Fiora>
s/meat eaten /things/
<egg>
Fiora: prefix by the name if you want to substitute in someone else's message
<egg>
e.g.,
<egg>
Fiora: s/.*/meow/
<Qboid>
egg thinks Fiora meant to say: meow
<whitequark>
lol
<bofh>
lol
<UmbralRaptor>
lol
<Fiora>
uh... i didn't mean to actually trigger the bot
<Fiora>
i was just typing a message
<Fiora>
i didn't want to substitute in anyone's message
<egg>
ah, sorry
<UmbralRaptor>
So, something to make beef more of something eaten at holidays instead of all the time?