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* UmbralRaptor
x_x
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<GreeningGalaxy>
!choose DIP|SOIC
<Qboid>
GreeningGalaxy: Your options are: DIP, SOIC. My choice: DIP
* UmbralRaptor
may have been dead for about 5 hours due to lack of sleep.
<UmbralRaptor>
And @ the earlier discussion, yeah. There's lots of bad stuff outside of snakeland for silly reasons.
* UmbralRaptor
stares at a mess of old Perl and IRAF.
* UmbralRaptor
also stares at how hard it can be to get things to compile.
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<GreeningGalaxy>
whitequark: what's the deal with these chips that look like a bare silicon crystal just sitting there on the board? I've noticed that every RPi that has integrated wifi has one. I can't seem to see any sign of solder, but I can make out a very faint pattern on top
<whitequark>
I think the pattern is in your imagination (or it could be some factory marking)
<whitequark>
the circuit is on the same side as balls
<GreeningGalaxy>
pretty sure it's not my imagination, but it is faint. it looks almost like it's slightly under the surface, which is weird
<whitequark>
mhm
<whitequark>
that would be unusual
<whitequark>
that you can see it, that is
<whitequark>
I mean, obviously there's the circuit, which is visible to the bare eye
<GreeningGalaxy>
I'm quite sure it's there now, I caught it just right in the light. I'm gonna see if I can use my close-focusing webcam to photograph it.
<whitequark>
hm
<whitequark>
how thick is the IC?
<GreeningGalaxy>
oh, I think it's text
<GreeningGalaxy>
really tenuous text, wow
<GreeningGalaxy>
I couldn't tell until I got the camera to catch a glimpse
<whitequark>
aha!
<whitequark>
told you it's factory markings
<whitequark>
probably just the part #, and one that has no correlation with what's in the datasheet
<GreeningGalaxy>
can't be more than 0.1 mm or so, it's very thin. and I lied about not being able to see the solder, I just hadn't looked at a low enough angle.
<whitequark>
0.1mm is pretty thin
<whitequark>
like paper thin
<whitequark>
literally
<whitequark>
paper is usually 100-150um
<GreeningGalaxy>
yeah paper thin sounds about right
<GreeningGalaxy>
maybe slightly heavier than notebook paper, but thinner than cardstock
<GreeningGalaxy>
got the text in sharp enough focus to read, it says Broadcom® and a few numbers. totally unsurprising.
<GreeningGalaxy>
I should see if I can mount this camera on some kind of balancing arm; it's proving useful.
<GreeningGalaxy>
so what's the point of not putting chips like that in a plastic package to protect them? seems like it just invites damage.
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<whitequark>
GreeningGalaxy: simply put
<whitequark>
it's *far* cheaper and also saves space
<whitequark>
like, with a package, you have to:
<whitequark>
manufacture a leadframe
<whitequark>
bond the die out
<whitequark>
encase it in epox
<whitequark>
with wlcsp? add balls, DONE
<whitequark>
all DIY IC projects are gonna use WLCSP too, because who wants to pay for packaging?
<GreeningGalaxy>
yeah, someone in ##electronics just told me that chip is probably primarily used in phones, so the WLCSP version is going to be the most common since space+cost trumps durability there
<whitequark>
it's not really much less durable
<GreeningGalaxy>
even if it's maybe not ideal for the world's cheapest computer or whatever, but that's how it stays cheap
<GreeningGalaxy>
isn't it?
<whitequark>
not particularly?
<whitequark>
monocrystalline silicon is hard.
<whitequark>
I once tried to break a PS2 (I think?) CPU by going at it with a screwdriver.
<whitequark>
bare die
<whitequark>
I think it took me like ten minutes before it finally fractured
<GreeningGalaxy>
wow
<whitequark>
like I tried relatively carefully at first.
<whitequark>
then with force.
<whitequark>
then with all force I got.
<whitequark>
then I just swung and smashed at it *hard* and that's when it cracked
<whitequark>
WLCSP would be somewhat less durable because the PS2 CPU was supported by some sort of underlay
<whitequark>
but it's not anywhere as fragile as you think
<whitequark>
chances are, the lead-free solder under it will crack first :p
<GreeningGalaxy>
heh
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<GreeningGalaxy>
!choose sleep|keep shitposting in ##linux
<Qboid>
GreeningGalaxy: Your options are: sleep, keep shitposting in ##linux. My choice: sleep
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<egg|zzz|egg>
!wpn whitequark
* Qboid
gives whitequark a defective inequality
<egg|zzz|egg>
!wpn Iskierka
* Qboid
gives Iskierka a prime floating point motor
<egg|coffee|egg>
also I guess you could make it go back to (a subset of) hieroglyphs, but that's perhaps less interesting
<egg|coffee|egg>
oh mongolian also comes from that?
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<Iskierka>
... this lecturer's slide clicker appears to have some kind of spatial tracking so he can point at the screen and the display itself will actually highlight.
<Iskierka>
I am trying to figure out how this works
<egg|coffee|egg>
so on a part that's loaded from launch as opposed as to from a save, partName is always "Part"
<egg|coffee|egg>
~the KSP API~
<Iskierka>
the way he's using it this definitely isn't pre-animated and I don't believe he's set up any systems in the lecture theatre comparable to the vive lighthouses. I am quite curious what this device is - it's even working quite reliably as he crosses the room
<Iskierka>
o.O
<egg|coffee|egg>
but part.name is what I want
egg|coffee|egg is now known as egg
<egg>
except then in the protoPartSnapshot it's saved as partName
<egg>
and then when it gets reloaded, the partName is that, too
<egg>
wait no, it still appears to be Part here
<egg>
ok, so the partName of a part is always "Part"
<egg>
its name is the interesting thing
<egg>
and for the protopartsnapshot that's the partName
<egg>
aaaaaaa
<Iskierka>
should've had a few more classes for inheritance to synchronise types of parts?
<egg>
aaaargh bits of fairings are physicalObjects not parts, and they actually matter
<egg>
and treating them like parts is going to be hard :-\
<egg>
(but I contrary to asteroids I can't really say "don't use fairings")
<egg>
!u ?
<Qboid>
U+10310 OLD ITALIC LETTER PE (?)
<egg>
stabbity
<egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor an impedance-matched geobukseon
<UmbralRaptor>
!wpn egg
* Qboid
gives egg a dessicated triangle
* egg
hydrates the triangle
<bofh>
!wpn egg
* Qboid
gives egg a normal McBoatFace
<egg>
!wpn bofh
* Qboid
gives bofh a Kronecker thagomizer with a Principia attachment
<bofh>
LOL
<bofh>
just what I needed
<egg>
huh, in 1790 (looking at that old Delambre thing for no particular reason) they wrote the tangent "tang." (the more recent french notation would be "tg", and of course there's "tan" from the anglo-saxon tradition)
<bofh>
I'm used to seeing 'tg' myself.
<bofh>
in, like, English texts.
<egg>
huh, I thought tg was more of a french/italian thing
<egg>
!wpn bofh
* Qboid
gives bofh an atomic mathematician
UmbralRaptor is now known as RadialRaptor
<RadialRaptor>
English *is* 3 languages in a trenchcoat…
Thomas|AWAY is now known as Thomas
<egg>
!wpn Thomas
* Qboid
gives Thomas a Sumerian astronomer
<Thomas>
!wpn egg
* Qboid
gives egg an avalanche dimetrodon
<egg>
!wpn RadialRaptor
* Qboid
gives RadialRaptor an unitary cathedral
<egg>
!wpn whitequark
* Qboid
gives whitequark a NFPA 704 trihexaflexagon
<RadialRaptor>
A 3-3-3hexaflexagon?
<whitequark>
!wpn egg
* Qboid
gives egg a tagged stinger which vaguely resembles an integrator
<egg>
ooh I can add it to my integrator libs
<whitequark>
lol
<egg>
whitequark: also how was your flight
<whitequark>
egg: nominal
<egg>
whitequark: better than nomal :-p
<whitequark>
!wpn bofh
* Qboid
gives bofh a gatling engineer
<whitequark>
that seems useful.
<egg>
uh, is that several engineers doing shifts to get the engineering done faster?
<egg>
whitequark: so, principia news: turns out it's quite crashy, since we rewrote half the plugin between Cantor and Cardano; it may still be a bit crashy by the new moon (hopefully subsequent releases will address that, the underlying design should be a fair bit more sound)
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<egg>
RadialRaptor: why radial?
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<egg>
!wpn GreeningGalaxy
* Qboid
gives GreeningGalaxy a cesium upper triangular vector
<GreeningGalaxy>
!wpn egg
* Qboid
gives egg a Maclaurin Bucket O' Nitrogens™
<Thomas>
lol
<egg>
Thomas: so I think I understand what's up with the asteroid stuff
<egg>
Thomas: do you have a save that you play semi-normally and which you have reverted a lot?
<Thomas>
No
<egg>
hmm
<egg>
well, it should be fairly frequent
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<egg>
Thomas: what happens is that SpawnAsteroid uses the static global state of the Unity rng
<egg>
now most functions init the rng from a stored seed before using it
<egg>
but SpawnAsteroid uses it, *then* sets lastSeed from its output
<egg>
thus it may pick up something that has been left by another function that initialises the unity rng
<egg>
and if you reload, it can end up using the same state to make an asteroid, twice
<egg>
I think
<egg>
maybe?
<egg>
:-p
<egg>
in any case one should see duplicate asteroids from time to time
<RadialRaptor>
egg: RV shenanigans.
<egg>
Thomas: >_> in this save I have three asteroids that have the same designation
<egg>
also the Dres asteroids get generated in the plane of Kerbin's equator, which gets weird in a game with a tilted Kerbin :D
<Thomas>
egg: May I suggest checking if the vessel type is space object instead of checking if the part is potato roid? Since you can change the parts with Kopernicus *whistle*
<egg>
Thomas: aah good point.
<egg>
Thomas: can you change the type to space object manually though?
<egg>
because if someone wants to call their ship a planet I shouldn't screw with it for that reason
<Thomas>
I am not sure. Maybe in the Rename Vessel section
<egg>
Thomas: also, shouldn't that be Unknown rather than space object?
<egg>
Thomas: I think I'm going to ignore that for now :-p
<Thomas>
No, Unknown is for "WTF are you doing there, stop"
<Thomas>
Asteroids get initialized with SpaceObject
<egg>
Thomas: because it's also a category in map view O_o
<egg>
for untracked asteroids
<Thomas>
Thats purely visual I think
<egg>
huh O_o
<Thomas>
Decompiler shows no usages of VesselType.Unknown
<egg>
Thomas: ok, can't rename it to a space object
<GreeningGalaxy>
KSP has quantum asteroids. They do not have a definite position until observed, only a probability distribution.
<egg>
GreeningGalaxy: and once you observe them too much they vanish >_>
<egg>
Thomas: it's quite complicated to deal with something multipart; you can change your code if you want, I'll just deal with stock
<Thomas>
egg: Ok
<egg>
Thomas: I'll still (try to) support single-part asteroids (though I'm not sure where you get your flightIDs from, since you seem to overwrite the protoVessel?
<Thomas>
Since KSP seems to have no problems, they seem to be user defined xD
<Thomas>
(noone really uses that feature)
<egg>
Thomas: user-defined? D:
<egg>
that's even worse than stock :D
<egg>
Thomas: I'll target the potatoroids and you'll fix your mess if you want :D
<egg>
(if you don't fix your mess and your users use principia they'll crash :D)
<egg>
principia has the best errors :-p
<egg>
!wpn GreeningGalaxy
* Qboid
gives GreeningGalaxy a cetacean gravitational variety with a dipole attachment
<egg>
!wpn RadialRaptor
* Qboid
gives RadialRaptor a continuous algebra
<egg>
!wpn Thomas
* Qboid
gives Thomas a cell
<GreeningGalaxy>
!wpn egg
* Qboid
gives egg a shippy compactification
<RadialRaptor>
Dipole gravity?
<egg>
Thomas: so repeatedly changing scenes spawns the same asteroid again and again :D
<egg>
I have 6 copies of FQT-931 :
RadialRaptor is now known as UmbralRaptor
<UmbralRaptor>
o_O
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<GreeningGalaxy>
just kidding, not until dd finishes
<GreeningGalaxy>
I decided to forget about full-disk encryption when I migrated to Debian, but I still want my home folder encrypted (and I need to log out to set up ecryptfs)
<GreeningGalaxy>
write speed on this probably-broken SD card is a grand total of... 4 MB/s!
<GreeningGalaxy>
I'm pretty sure it's supposed to be a class 10
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<GreeningGalaxy>
wow, I made it all the way to 30 GB. I was definitely expecting something to break by this point.
<egg>
!wpn GreeningGalaxy
* Qboid
gives GreeningGalaxy a phase-locked pentode-like snek
<GreeningGalaxy>
sigh. I was so confident about programming microcontrollers until yesterday happened. :/
* egg
pets GreeningGalaxy with a snake
<GreeningGalaxy>
I heard ESP8266 supports µPython, maybe that's a good option
<egg>
GreeningGalaxy: it's ok, not everything is awful outside snakeland
<egg>
(C is)
<egg>
(don't write C)
<egg>
(if you write C++ don't write it like it's C)
<Iskierka>
what defines writing it like it's C?
<GreeningGalaxy>
apparently the way I was writing it was like it was C
<GreeningGalaxy>
because I was using arrays or something
<egg>
well in your case there wasn't *much* to do, you weren't allocating or whatever, and it seems you actually needed to get two bytes from a 16-bit integer
<GreeningGalaxy>
I think the solution to my problem is just "don't do that"
<egg>
GreeningGalaxy: nah, as was said last time, shifts and bit operations will do that for you
<egg>
just don't do it by casting and whatnot
<egg>
if you want the low bits, bitmask, and convert
<egg>
if you want the high bit, bitmask, shift, and convert
<egg>
(or shift and convert I guess)
<GreeningGalaxy>
but when I did that, that was when the SCLK light started looking like it was PWMing and I lost all my remaining sanity D:D
<kmath>
<whitequark> *kicks down the door of an ISO/IEC JTC1/SC22/WG14 meeting, panting* did someone order a bucket of vowels https://t.co/qEBnkxmhPe
<GreeningGalaxy>
SCLK is officially "slave clock" of an SPI bus but I find using "slave" in this context to be in pretty poor taste so I usually replace it with "student"
<egg>
GreeningGalaxy: grad student clock? >_>
<GreeningGalaxy>
!acr -add:MOSI Master Out Student In
<Qboid>
GreeningGalaxy: I added the explanation for this acronym.
<GreeningGalaxy>
!acr -add:MISO Master In Student Out
<Qboid>
GreeningGalaxy: I added the explanation for this acronym.
<egg>
>_>
<egg>
<_<
<GreeningGalaxy>
!acr -add:SCLK Student Clock
<Qboid>
GreeningGalaxy: I added the explanation for this acronym.
<egg>
GreeningGalaxy: that won't facilitate actually using that to understand the acronyms though :-p
<GreeningGalaxy>
!acr -add:SPI Serial Peripheral Interface
<Qboid>
GreeningGalaxy: I added the explanation for this acronym.
<GreeningGalaxy>
fine, feel free to update them as you like
<egg>
GreeningGalaxy: anyway, bit operations should do the trick, now I have no idea why your chips try to break your sanity, but at least you won't fall afoul of aliasing rules like that :-p
<GreeningGalaxy>
the chip that really broke my sanity was the LS7366 counter I was trying to interface, which for some reason was behaving in a way indistinguishable from how a solid block of plastic would behave
<e_14159>
GreeningGalaxy: Follow mesos and call it Agent?
<SnoopJeDi>
I realized after lunch that differentiation is a projection over the subspace formed by the exponentials...but I'm struggling to properly contextualize that information. Is that just a linear-algebraic interpretation of the ODE `D[x] = x` for the simplest differential operator D?
<SnoopJeDi>
The projectiony bit has me stuck mentally
<GreeningGalaxy>
e_14159: the problem is it's a lot more useful if it starts with S
<e_14159>
GreeningGalaxy: Subordinate?
<GreeningGalaxy>
also works
<e_14159>
Satrapy?
<GreeningGalaxy>
(brb encrypting, really this time)
<Iskierka>
... I'm installing a bunch of ruby stuff on my pi to make a clock screensaver work
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<egg>
!wpn
* Qboid
gives egg a lanthanum repeating tardigrade
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<GreeningGalaxy>
well, that sure didn't work.
<GreeningGalaxy>
I got about halfway through my music and then got some kind of disk write error
<GreeningGalaxy>
luckily no apparent data loss, but I ended up with a .ecryptfs folder full of a lot of trash
<SnoopJeDi>
you're encrypting your music?
<GreeningGalaxy>
I was going to try to encrypt my everything
<GreeningGalaxy>
but yeah it looks like I should probably just give up on that and only encrypt what I actually need to encrypt
<egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a sparse ship
<UmbralRaptor>
!wpn -add:wpn glider
<Qboid>
UmbralRaptor: Weapon added!
<UmbralRaptor>
!wpn -add:wpn rake
<Qboid>
UmbralRaptor: Weapon added!
<UmbralRaptor>
!wpn egg
* Qboid
gives egg a rubidium falconet
<egg>
I'm not sure that's the best metal for artillery
<SnoopJeDi>
well, after days and days of struggling, I have an input file that doesn't cause the field reader to crash. It just causes the script to silently not run any simulation steps.
<UmbralRaptor>
stabbity
<egg>
!u ˙ ͜ʟ˙
<Qboid>
U+02D9 DOT ABOVE (˙)
<Qboid>
U+0020 SPACE (␠)
<Qboid>
U+035C COMBINING DOUBLE BREVE BELOW (◌͜)
<Qboid>
U+029F LATIN LETTER SMALL CAPITAL L (ʟ)
<Qboid>
U+02D9 DOT ABOVE (˙)
Thomas is now known as Thomas|AWAY
<GreeningGalaxy>
whoops, I accidentally washed this CR2032
<GreeningGalaxy>
I wonder if it's still any good
<GreeningGalaxy>
still puts out 3V, promising
* UmbralRaptor
is reminded of accidentally washing a phone charger. Multiple times.
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<egg>
GreeningGalaxy: how is it doing?
<Iskierka>
how does a phone charger hide in a washable item multiple times
<egg>
!wpn Iskierka
* Qboid
gives Iskierka a nitrogen brioche
<Iskierka>
... so is it really cold or what?
<egg>
Iskierka: well, that doesn't say liquid
<UmbralRaptor>
Partially ionized brioche
<UmbralRaptor>
Iskierka: cargo pants >_>
<Iskierka>
... really big cargo pants?
<Iskierka>
granted I remember fitting my 10" eeePC in one pocket of a pair
<Iskierka>
but I definitely knew it was there
<egg>
UmbralRaptor: are those like cargo cults?
<UmbralRaptor>
I'm not sure about tablets that large, but Nexus 6 in an otterbox fits comfortably.
<egg>
otterbox?
<UmbralRaptor>
egg: Brand of cases/boxes. Not as cute as you're hoping.
<egg>
:-\
<UmbralRaptor>
But yeah. You'll put a phone/tablet in one so, it survives Nomal clumsiness.
<UmbralRaptor>
(… is Nomal clumsy?)
<GreeningGalaxy>
egg: how is what doing?
<egg>
GreeningGalaxy: your CR2032
<GreeningGalaxy>
oh, still lights an LED so I guess it's good
<egg>
GreeningGalaxy: I always get confused by the pronunciation of LED (here with your "an LED")
<egg>
GreeningGalaxy: I think I mostly pronounce it like Pb
<UmbralRaptor>
el eee dee
<egg>
UmbralRaptor: also IPA, it's a thing >_>
<SnoopJeDi>
so are contextually-appropriate adjustments to communication :P
<egg>
UmbralRaptor: yeah, I know it's pronounced like that, but I tend to pronounce it [lɛd] :-p
<egg>
SnoopJeDi: using international conventions in actually helpful when talking about pronunciation between speakers of different languages >_>
<SnoopJeDi>
Only insofar as it's an expressive tool
<SnoopJeDi>
Since it is its own language ;P
<egg>
SnoopJeDi: insofar as it fosters less confusion
<egg>
and is standard, and is known by the parties
<SnoopJeDi>
Nobody can help those who deliberately seek to misunderstand others, egg
<egg>
...
egg is now known as egg|zzz|egg
* UmbralRaptor
can safely say that school spent 0 hours on the IPA. And it's sorta hard to type. =\
<egg|zzz|egg>
UmbralRaptor: yes, but I have been misled by the american thing of using e for [i]
<UmbralRaptor>
When in doubt, use a a schwa,
* egg|zzz|egg
stabs merriam-webster
<egg|zzz|egg>
UmbralRaptor: I don't think English works like semitic languages :-p
* egg|zzz|egg
trs strppng ll cnsnts... k, mb t wrks?
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<egg|zzz|egg>
SnoopJeDi: also see this thread https://twitter.com/whitequark/status/843596312532602882 while that's not my case, I *speak* very little; I can make sense of some of those ee or uh-based pronunciation indications (not all, and I wouldn't be able to use them, and I'm utterly puzzled e.g. by the stuff used by Merriam-Webster), but more generally, don't assume that misunderstanding of things that you hold trivial
<egg|zzz|egg>
is intentional (e.g. if you were to talk of gallons or miles I would likely guess less than one sigfig right on their values)
<kmath>
<whitequark> @Migweld @oe1cxw @AstroKatie let me rephrase: that's how I learned english
<egg|zzz|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a cinematic equivalence which vaguely resembles an optocoupler
<UmbralRaptor>
!wpn egg
* Qboid
gives egg a Колмогоров pig
<UmbralRaptor>
stochastic porcine?
<egg|zzz|egg>
Iskierka: yeah the distinctions between regional accents are likely dubious, but if you want to roughly learn IPA it should give you a good idea of the sounds that appear in English
<egg|zzz|egg>
which is why I was pointing UmbralRaptor to it
<Iskierka>
tbf it was only a couple years ago I learned gallons to 1 sig fig. I used to think they're huge, like 10+ litres, maybe 20. Then learned that the largest standard milk bottle size is more than a gallon
<Iskierka>
(which, given it's liftable, is significantly less than 10 l)
<egg|zzz|egg>
Iskierka: that gives you the order of magnitude, but not one whole sigfig: is it 1 or 3 litres?
<UmbralRaptor>
3.78
<UmbralRaptor>
Also, volumes are horrible.
<Iskierka>
3.78 for murrican
<egg|zzz|egg>
UmbralRaptor: O_o huh, bigger than I'd have thought, I'd have aimed at slightly-larger-litre
<UmbralRaptor>
231 cubic inches, or 768 teaspoons…
<egg|zzz|egg>
...
<Iskierka>
imp gal is 4.54
<egg|zzz|egg>
the brits have bigger milks
<egg|zzz|egg>
(anglonorman cows?)
<egg|zzz|egg>
let's observe those!
<Iskierka>
I thought it was huge because cars fill up with quite a lot of gallons and take a while to fill, but I guess I judged fill rate poorly
<Iskierka>
it's a lot but nowhere near the scale I thought
<UmbralRaptor>
Yeah, ounce and pint are different IIRC
<Iskierka>
(well, no, opposite - cars have a relatively small number of gallons, but still a fair few, and fuel tanks look big, so size gauging is weird)
* UmbralRaptor
was around lots of 1 gallon milk jugs as a kid.
<Iskierka>
here the main label is litres and secondary pints, even for the 1 gallon ones
<Iskierka>
(or ~gallon)
<Iskierka>
so never noted that a gallon of milk was normal
<egg|zzz|egg>
SnoopJeDi: unrelated: I'm confused by your projection thing, isn't it just the identity on the subspace spanned by exp? I the identity is idempotent alright, but that seems like a weird way of putting it
<egg|zzz|egg>
s/I the/I mean the/
<Qboid>
egg|zzz|egg meant to say: SnoopJeDi: unrelated: I'm confused by your projection thing, isn't it just the identity on the subspace spanned by exp? I mean the identity is idempotent alright, but that seems like a weird way of putting it
<egg|zzz|egg>
though that actually works without the " mean", if you call the identity I :D
<SnoopJeDi>
yes but it's a valid operator off that subspace too, hence the projection-talk
<egg|zzz|egg>
SnoopJeDi: ah but it's not idempotent
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<SnoopJeDi>
I'm quite sure I've realized something perfectly obvious, I just don't quite know what
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<egg|zzz|egg>
differentiating twice doesn't yield the same thing as differentiating once
<SnoopJeDi>
it does for C*e^x, and sufficient definition of the differential operator yields other subspaces
<egg|zzz|egg>
so it's not a projection by the usual definition (idempotent linear endomorphism)
<SnoopJeDi>
which are the spanning spaces for other ODEs
<SnoopJeDi>
err solution spaces
<egg|zzz|egg>
right it's idempotent over that subspace, but there it's even *the identity*
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<egg|zzz|egg>
which is a nice operator
* egg|zzz|egg
pets the identity
<egg|zzz|egg>
the thing is over the whole space, it's not idempotent
<egg|zzz|egg>
so it's not a projection there
<SnoopJeDi>
yea
<egg|zzz|egg>
it's a projection if you consider it on the space of functions such that f"=f'
<egg|zzz|egg>
which are... affine transformations of exp?
<egg|zzz|egg>
SnoopJeDi: so it's a projection of the c exp(x) + d onto the c exp(x)
<egg|zzz|egg>
SnoopJeDi: on polynomials of any bounded degree it's nilpotent (but not on the whole of polynomials)
<egg|zzz|egg>
!wpn -add:adj nilpotent
<Qboid>
egg|zzz|egg: Adjective already added!
<egg|zzz|egg>
!wpn -add:adj idempotent
<Qboid>
egg|zzz|egg: Adjective already added!
<egg|zzz|egg>
hah
<egg|zzz|egg>
SnoopJeDi: it's involutory over the c exp(x) + d exp(-x)
<egg|zzz|egg>
!wpn -add:adj involutory
<Qboid>
egg|zzz|egg: Adjective added!
<egg|zzz|egg>
!wpn -add:wpn involution
<Qboid>
egg|zzz|egg: Weapon added!
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<egg|zzz|egg>
!wpn UmbralRaptor
* Qboid
gives UmbralRaptor a constant
<GreeningGalaxy>
christ, I got absolutely nothing done today