Tehora Rogue (@TehoraRogue) profile picture

An aspiring researcher in a non-euclidean world

Joined October 2016
Photo by Tehora Rogue (@TehoraRogue)Photo by Tehora Rogue (@TehoraRogue)Photo by Tehora Rogue (@TehoraRogue)Photo by Tehora Rogue (@TehoraRogue)Photo by Tehora Rogue (@TehoraRogue)
Tehora Rogue retweeted
Our video "Portals to Non-Euclidean Geometries" has passed 1M views! I know only 5-6 videos using "non-Euclidean" incorrectly with more views. This is not Minecraft!* (link in the comment) * 3 of these videos are about Minecraft
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Tehora Rogue retweeted
Some #mathart from 2001. Typical visualizations of surfaces I would see back then were boring, angular, and sameish (they used default Mathematica settings, polygons visible). This uses a rendering method where triangles would be subdivided until they contained 1 pixel.
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... And that means I have a lot to analyze.
There are now 151243 tessellations in the Tessellation Catalog! zenorogue.github.io/tes-cata… Marek has found (hopefully) all k-uniform Euclidean tessellations up to k=12 (en.wikipedia.org/wiki/List_o… currently only lists up to k=5), ...
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Our animation for @cs_kaplan's #SwirledSeries art project. We start by a making the chessboard hyperbolic and then map conformally the #hyperbolicplane into a... cat! (The first part may remind you of @TilingBot's animation -- we independently had a very similar idea!)
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youtube.com/watch?v=4t9Ffhb5… favourite of my latest discoveries (Polish animation: red and black, you do not need to know Polish to enjoy it!)
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I am quite sure students will meet lecturers' pets during online streams of the lectures from homes... :D I also imagine videos in youtube with "The cat at 4:45!" comments.
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Tehora Rogue retweeted
Creatures living in the hyperbolic world may use the native Poincaré model to get conformal, circular, and totally useless maps of their whole world.
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Tehora Rogue retweeted
In each iteration, temperature of every cell is the average of temperatures of itself and neighbors in the previous iteration. Even though circles (=shapes reachable in N steps) are polygonal here, heat spreads in perfect Euclidean circles (on a sufficiently symmetric tiling).
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Tehora Rogue retweeted
HyperRogue 11.2: Thurston geometries (free update!) zenorogue.blogspot.com/2019/…
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Tehora Rogue retweeted
A rubbery object in non-isotropic geometry (e.g.Nil) should have its preferred orientation which minimizes its potential energy -- intuitively, if we try to rotate it, it should get back to its preferred orientation. This does not happen in our simulation, but still cool IMO :)
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The last part of my PhD. Still unwritten. xitter.cf/ZenoRogue/status/10149…
The effects of negative curvature: at one point, we can see bundles of almost parallel and very close straight lines; but if we follow them, they shortly turn out to be quite far away from each other.
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Update -- written and handled in December. The finish of the PhD studies tends to be a depressive period in life, now it is much better.
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Happy to see my "facebook friendship video" features random people. Not my real-life ones (:.
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If you are interested in basic introduction to scraping see the slides from the course I gave this year (to be improved!) coin.wne.uw.edu.pl/dcelinska… Share #datalove! #SMSociety
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Save what you are working on NOW! Or your work will vanish just like the last paragraph I have written today (recently it has been super hard to write for me so even such small deletion is unpleasant)...
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My #phdthsis is a neverending story. Here, enjoy a recent experiment related to it. Visualization of Kohonen SOM on GitHub programmers -- azimuthal equidistant projection in a nonorientable quotient space of hyperbolic plane. Yes, I know, nobody cares.
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I have some ideas how to use it... but first my thesis... xitter.cf/ZenoRogue/status/98376…
Horocycles in the GP(4,1) heptagonal tiling.
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He started with a heart (so romantic) but I disliked and told him to use a cat pattern instead... xitter.cf/ZenoRogue/status/98990…
A better algorithm for conformally mapping the hyperbolic plane to "arbitrary" shapes. The outside is mapped to a wrapped hyperbolic plane.
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Why all of my favourite conferences have deadlines in January?!
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Too much end of semester, too little time...
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