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Puppy Pi @codepuppy@mathstodon.xyz

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Sometimes I wonder if almost all the problems in the world could be fixed by:

Not considering people themselves as having different values/worths than each other.

Even in lowkey ways! Like making a statement by putting someone down instead of refuting their ideas, or at worst, saying they believe in terrible things.

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Sometimes I feel like writing some fediverse software :3

But it'd be a desktop app and in Java and I worry people would rather I never even wrote it X'D

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I'm the person who'll follow you around like a puppy if I like you, and who spends their alone time playing with and creating all kinds of sciencey mathey computerey things :D

(Maybe I can follow someone around spending time with them *and* do sciencey things! :D )
(Although I'm really busy now in my life with certain projects :( )

(..Maybe someone would like to work on those same projects! :D )
(But I'd have to trust them a lot, and most aren't ready yet as of writing :P )

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(fyi, if I unfollow you it's probably because I start to feel like my presence makes / would make you uncomfortable (or maybe in rare cases, that we just mutually wouldn't get along), not because there's anything wrong with you!)

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by the way people of the world, if I'm annoying and uncomfortable and you wish I'd unfollow you, PLEASE just let me know!! I'm *terrible* at social cues! ><

(I often just delete accounts or don't make them because of how many people I make uncomfortable with my presence, but I'm giving this a shot! if people tell me when I am, then maybe I can avoid causing discomfort enough that I don't have to delete the whole account to prevent incidents I never recognize are making someone uncomfortable!)

Puppy Pi boosted

Pekoe collects pens. 💞
(You can kind of hear a bit of a wheezy snarfley sound. She does that when she is excited or playing very hard. It’s super cute. It’s a harmless leftover effect from some of the illnesses she had in her pre-adoption life.)

It makes a big-dimensional thing from small-dimensional things :>

It's like the Complex Hull in that! \:D/


Is the only difference between a "linear map" and a matrix the abstractness of the former, being irrespective of basis set? :3

Like the difference between a "vector" and a tuple of numbers (which is only a vector in a particular basis)? :>


AHHhh I get it! :DD

I just got a new idea to add to my idea collection! :D
( ie my brain XD )

I read a wikipedia article about a math thing I didn't already know about and I got it! :D

(Okay well, not at first; I was so confused XD
But eventually I did, and then edited it so that I wouldn't have been confused and hopefully future people like me won't be! :D )

But oooohh this is so great! I love the feeling of gaining a totally new and smol and wonderful idea! :D!

Puppy Pi boosted

politics, west virginia, :stare: Show more

I can explain concisely though, that what is particularly troubling me is this equation:

ΔG = -RT ln(K)

Changing the units of a dimensional K or changing the arbitrary standard pressure fugacities are divided by, would change the right-hand side, but the left-hand side isn't based on our arbitrary conventions of concentration or pressure measurement! \o/

I really really want to understand the units of Equilibrium constants X"D

But 500 characters is not enough to describe my confusion XD

And this isn't just something I can derive by thinking real hard X'D

So if anyone can help, a puppy needs you ;w;


Puppy Pi boosted

A space ship landed. An alien emerged. "Greetings," it said, "do you have a leader?"
"We have many."
"Then I will wait."
"For what?" people asked. "For us to have one, or none?"
But the alien would not say.
#MicroFiction #TootFic #SmallStories


If a square matrix is an affine transform (without translation),

Then what is a rectangular one? XD

You have W coordinates/dimensions, but it outputs H values! Is it spitting out, like, parameters on a parametric surface or something? 8>

(oops I'm sorry; the right-hand-side would be a column vector *two* elements high :> )
(I'm not used to rectangular matrixes..hence this post XD )

But with a non-square matrix! So you can't take the characteristic polynomial! :O

(Also, if it helps, in this case, you can multiply a solution all by a constant value and it still counts as a—AHHH this is just eigenvectors and eigenvalues isn't it!!? XDDD )

Puppy Pi boosted
Puppy Pi boosted

Something that endlessly amuses me; Anglicans going on about the sanctity of marriage

Entire church was founded so a bloke could get a divorce


You're given an integer matrix:

2 0 2 2
0 2 1 2

Now, if that's the coefficient matrix to a system with 4 unknowns (ie, multiply it by a column vector 4 elements high), and it's supposed to produce all zeros (a column vector of 4 zeros ofc),

Then these are some solutions! (written transposed as row vectors for space X3 )

[4 3 -2 -2]
[3 1 -4 1]
[1 -1 -4 3]

Now how could you have found those?
And are there any more integer or rational solutions?


Puppy Pi boosted
Puppy Pi boosted

So a guy walks into a bar and orders a drink.

And then orders another.

And then has to get help leaving the bar and summons an Uber.

What, you were expecting a joke?

Building-wide rails of 12V and 5V and computers with NO POWER SUPPLIES ANYONE?! 8D

Just nearby banks of capacitors for noise and spike/dip decoupling :D

Okay this does it, I'm with Edison as far as inside-buildings go XD

• If we used DC (at least within a building), you could plug in the new battery backup *then* unplug the old one without having to take servers/ICU units/appliances/etc. offline XD

• And you could have giant banks of capacitors to *instantaneously* cover the momentary switch to the longterm backup generator :>

• And computers/usb/etc. that are already DC could use the power more efficiently :D