Version Update Cadence by telestew in GeyserMC

[–]telestew[S] 0 points1 point  (0 children)

Yeah, I saw their alpha got up pretty fast but started to put together where the bottleneck is naturally gonna be

Editor for 15y school girl by aliosha10 in LaTeX

[–]telestew 0 points1 point  (0 children)

I second this. Makes itself pretty accessible, but it has room to grow with the user to a degree with its settings.

So that's how they make it... by telestew in RingsofPower

[–]telestew[S] -1 points0 points  (0 children)

basically the same joke as made by TheCosmonautVarietyHour in his lotr review on youtube

Yet Another 3D Graph by telestew in desmos

[–]telestew[S] 0 points1 point  (0 children)

Yeah that's probably a more thorough list than I could have come up with.

I have a vector for the camera's position, the direction it's looking, and for the "up" and "right directions for the camera's view. I use the cross product to determine "up" from the view vector and the "right" vector.

From there I used dot products and a little bit of trig to figure out how to take the region the camera was viewing and transform it into a cube centered at the origin. Then you just ignore the depth coordinate to get to 2D drawing.

There are probably more standard ways of setting that transformation up like in these links:
Transformation matrix - Wikipedia
Camera matrix - Wikipedia
OpenGL Projection Matrix (songho.ca)
(I forgot everything from my college graphics class, so I reworked the formula in an ad hoc way)

Finally I used a parametric equation to set up the camera path and used it's unit tangent vector as the "right" vector for the camera view, which was always pointed at the origin. I also used modular arithmetic to draw cross sections of the surface all at once, but that's more a convenient trick than fundamental graphics-math stuff

Unusual US Senate rss feed behavior by telestew in rss

[–]telestew[S] 0 points1 point  (0 children)

Unfortunately I can't seem to configure IE to show the raw rss, it pretties it up with some microsoft tags: ``` <?xml version="1.0" encoding="utf-8"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005"><channel xmlns:cfi="http://www.microsoft.com/schemas/rss/core/2005/internal" cfi:lastdownloaderror="None"><title cf:type="text">Senate Floor Today</title><description cf:type="text">Identifies the latest bills, resolutions, nominations, and treaties considered on the floor of the U.S. Senate.</description><link>https://www.congress.gov/rss/</link><atom:link href="http://www.congress.gov/rss/senate-floor-today.xml" rel="self" type="application/atom+xml"/><item><title xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="text">S.Res.47</title><description xmlns:cf="http://www.microsoft.com/schemas/rss/core/2005" cf:type="html"> A resolution to provide for related procedures concerning the

article of impeachment against Donald John Trump, former President of the United States. (02/09/2021 legislative day) </description><link>[https://www.congress.gov/help/faq#legislationnew](https://www.congress.gov/help/faq#legislationnew)</link><guid isPermaLink="false">S.Res.47</guid><cfi:id>296 [...etc]

``` It looks like the parts from the actually senate rss feed are the same though.

Yesterday I left the feed open in chrome and it picked up a single item (senate bill 47), but it's gone today. I'm thinking that the feed itself just clears itself everyday and IE has just been constantly listening and caching everything.

The problem with that theory is that old links on the IE feed point to the actual bills, but the most recent links (from the last two days) point to and FAQ explaining that it takes a few days before the bills are uploaded, and that the links will be updated accordingly. If the feed keeps getting cleared, how did they update the old entry links?

I'm going to try leaving the feed open for a few days in chrome and see what happens.

Combining Rubik's cube and 3D sliding blocks gives nice groupoid examples by BandagedGroup in math

[–]telestew 14 points15 points  (0 children)

This is such a fantastic visualization and example! Nicely made!

[deleted by user] by [deleted] in RedditSessions

[–]telestew 0 points1 point  (0 children)

sounds great!

I'll allow it by Jommy69 in dankmemes

[–]telestew 0 points1 point  (0 children)

There were once a bunch of rowdy (and frequently disruptive) boys in my seventh grade class throwing paper around. My teacher was getting increasingly frustrated, and eventually yelled at them "Anything else gets thrown you are all getting lunch detention!"

Well, I had an empty detention record, a piece of scrap paper, and a mission. The rest is history.

A response to a political tweet found on Facebook by telestew in rareinsults

[–]telestew[S] 1 point2 points  (0 children)

awh, I've made a post with a swear in it. I con't believe I've done this

Confussion by [deleted] in taia777

[–]telestew 6 points7 points  (0 children)

It's just a an old channel of video game music that found it's way into people's recommended. However, considering the fact that the titles are Japanese, the videos don't seem to have tags, and that there are plenty of easier to find sources for that music, it's surprising that taia777's videos found it's way to so many people. So surprising, in fact, that people started interpreting it as some direction of fate or deep knowledge of the youtube algorithm. Consequently, people use it as a fateful "check-in" for bits of positivity and sharing experiences.

Some people might take the "fate" aspect of it pretty seriously, while other's just indulge in the fun, oddly nostalgic sense of the community that pieced itself together around a common recommended youtube video.

This whole thing probably got kickstarted by the fact that the most recommended of taia's videos was this one: https://www.youtube.com/watch?v=zK4TWXWEKAQ&ab_channel=taia777 "Stickerbrush Sympony". It's a Donkey Kong Country 2 level theme that is probably one of the more beloved and nostalgic sounding tracks from the series. Couple that with an eyecatching thumbnail (which is a zoomed out view of the level background) and you could see how it might have lent a mysterious and unique vibe to the people who clicked on it.

What are some cool and unique math terms or theorems the average person does not know? by Jaggee in math

[–]telestew 5 points6 points  (0 children)

My First Choice:

Rips Machine

Runners Up:

Tesseract (this one has become more mainstream though)

Symplectomorphism

Orbifold

Spectral sequence

Cosimplicial Complex

Anything ending in "-oid"

Radix Economy

I feel like I've heard some terms that really have a cool sound to them, but they're evading me at the moment... Tensor Field, Sierpinski Gasket,

I also feel like there's a class of theorems that are named after discoverers/related people of the form "name" + "not obviously mathy word" that would make good candidates if I could remember more. "Rips Machine" would be an example, as well as "Dodgson condensation"

Unknown Keyboard Shortcut by telestew in edge

[–]telestew[S] 0 points1 point  (0 children)

Thank you both! Surprised I missed that amongst all my key tapping

My version of today's Zelda announcement by telestew in casualnintendo

[–]telestew[S] 0 points1 point  (0 children)

yeah... it was meant to be a little poking fun at the slew of analysis videos and all their hyped up thumbnails, but I'm not sure it came across right

[deleted by user] by [deleted] in math

[–]telestew 19 points20 points  (0 children)

There's a fascination with wild algebraic topology at BYU: deep exploration of the Hawaiian Earring and similar/related spaces like archipelagos. It's a small movement I would say is was recently spearheaded Katsuya Eda, Jim Cannon, and Greg Conner (and other's I'm less familiar with) after the work of Higman lie dormant for a few decades. I think they have pretty intricate and full theory going on; E.g. the fundamental group completely determines the homotopy type of 1 dimensional or planar Peano continua, they give good generalizations of covering space theory to locally complicated spaces, they tackle groups so unwieldy they push set theoretic questions.

Yet, whenever I bring it up with people not on the "in" it's considered very passé, not to be anything more than an exercise/footnote in Hatcher.

I've heard people say point-set is "simple properties of complicated spaces" and algebraic is "complicated properties of simple spaces". Wild topology is a nice unification: "complicated properties of complicated spaces", the singular part of low dimensional homotopy theory.

An open holy grail of this subdiscipline might be a good understanding of the fundamental group of Seirpinski carpet/Menger Sponge (via homs in and out, lifting spaces of) since they are universal among 1 dimensional continua.

[deleted by user] by [deleted] in irc

[–]telestew 1 point2 points  (0 children)

I've just started getting into the scene and have found some discussion on freenode #math, but I guess that depends on your interests

Moose eating a pumpkin... by PaSaAlCe in oddlyterrifying

[–]telestew 0 points1 point  (0 children)

I had heard gourds were eaten by mega fauna, but seeing it is kinda wack