Gro-Tsen

https://bsky.brid.gy/r/https://bsky.app/profile/gro-tsen.bsky.social

Eclectic mathematician, irritable geek, boring homosexual, procrastinator extraordinaire, overworked dilettante and full-time human being. I post in fr&en.

🌉 [bridged](https://fed.brid.gy/bsky/gro-tsen.bsky.social ) from 🦋 [gro-tsen.bsky.social](https://bsky.app/profile/gro-tsen.bsky.social ), follow Bridgy Fed for the Atmosphere (Bluesky) (npub1pqr…2sck) to interact

Web site: https://bsky.app/profile/gro-tsen.bsky.social

Public Key

npub134cx3hs0slpmgm54zqha5ckw5nh30gd7z06965sl9g79gs6qc8nsdt8kt6

NIP-05 Address

gro-tsen.bsky.social_at_bsky.brid.gy@momostr.pink

Profile Code

nprofile1qqsg6urgmc8c0sa5d623qt76vt82fmch5xlp8aza2g0j50z5gdqvrecpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsw86gz8

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yabu.me

relay.damus.io

nos.lol

Author Public Key

npub134cx3hs0slpmgm54zqha5ckw5nh30gd7z06965sl9g79gs6qc8nsdt8kt6

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Last Notes

2026-10-23 11:13:43 UTC

Clearly, “deeply alarmed” is one step above “closely monitor the situation”, but how does it compare to “stand in full solidarity” on the EU-response-meter?
RE: https://bsky.app/profile/did:plc:wr6esgkuixhvsge3ueraz6yb/post/3myjzoayudc2g

2026-08-21 12:07:39 UTC

Clarke's famous law that “any sufficiently advanced technology is indistinguishable from magic” has a dual: any sufficiently developed magic would be industrialized and no longer considered as magic but as technology.

2026-08-04 08:24:59 UTC

One of Russia's most effective techniques to destabilize the 🇪🇺 is to encourage people to try to migrate to Europe, while simultaneously supporting far right political parties that depict such people as invaders and will blame the EU for “lax” border policies.
RE: https://bsky.app/profile/did:plc:jgvcogxgfeplj7g3tfov7iro/post/3ms6aakhzts2b
#note13qx…gg6p

2026-06-20 09:43:24 UTC

J'avoue que, pour moi, «porte un costume cravate» envoie un signal que j'associe à la dangerosité et/ou la malhonnêteté (mentalement relié aux politiciens, banquiers, agents immobiliers…), probablement comparable à l'a priori que certains peuvent avoir sur le look baskets-survêt des «racailles».
RE: https://bsky.app/profile/did:plc:t6643c2is6pi3ollcgqrkmvh/post/3mopi2bbtn22d

2026-05-23 11:08:25 UTC

I find it surprising that nobody seems to be comparing OpenAI's progress on the Erdős distance problem with Aubrey de Grey's 2018 progress on the Hadwiger-Nelson problem. Both are about plane unit distance graphs, and I think they are very comparable in many respects. 🧵⤵️ •1/16

2026-05-05 12:06:31 UTC

It seems that I've stumbled upon a new triangle center that is not one of the >70k centers listed in Clark Kimberling's ‘Encyclopedia of Triangle Centers’. 🤯 [faculty.evansville.edu/ck6/encyclop...](https://faculty.evansville.edu/ck6/encyclopedia/ETC.html )
Here is how it's defined: 🧵⤵️ •1/8
[ENCYCLOPEDIA OF TRIANGLE CENTE...](https://faculty.evansville.edu/ck6/encyclopedia/ETC.html )

2026-03-25 13:07:12 UTC

So, to recap: Trump is negotiating with Iran, but without Iran, the end of a war started to end Iran's nuclear program that was already obliterated, a war he previously claimed to have won, and a key point of the negotiations is for the strait of Hormuz, which was not closed, to be reopened.

2026-02-21 12:22:03 UTC

Just to remind anyone who isn't a US citizen that that country is not safe for travel and you have no protection against arbitrary detention, even if you check all the “safe” boxes of being a white elderly middle-class British woman with a valid visa and no criminal record named “Karen”:
RE: https://bsky.app/profile/did:plc:lafbr3dznxdyvgup2umwssht/post/3mfe22oxf622z
#note1dpl…q2r6

2026-02-15 10:47:36 UTC

I really have a hard time wrapping my mind around the concept of chauvinism.
Being proud of one's country seems to me as incomprehensible as being proud of the room one is standing in because previous people standing in the same room did great things.

2026-02-01 21:27:28 UTC

Mon dernier repost me rappelle la blague du gamin qui tombe sur un livre dont le titre est «APPRENDRE À BAISER», qui l'ouvre avec empressement et découvre tout déçu qu'il s'agit du volume 3 d'un dictionnaire encyclopédique en 30 volumes.

2026-01-13 21:49:15 UTC

OK, new proposal!
Rather than letting the US or Denmark have Greenland, how about we divide it between Spain (west) and Portugal (east) along a meridian, say, 370 leagues west of the Cape Verde islands?
(I'm sure nobody thought of that before.)

2026-01-04 12:03:51 UTC

I think the BBC meant to say that the correct answer to the titular question below is “we have no f🤔cking clue!”. [www.bbc.com/news/article...](https://www.bbc.com/news/articles/crmlz7r0zrxo#:%7E:text=Who's%20now%20in%20charge%20in%20Venezuela%3f )
https://shiitake.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:tnde52rcbqxotp7a2cl7bmxu&cid=bafkreihw54earysery3iw6ju7jqcxbicucpjyict3qh4oyf7igribpvtgu

2025-12-17 10:54:13 UTC

Some Unicode emoji fun I stumbled upon somewhere: if, inside the string “🇺🇸🇨🇺” (representing the flags of the US and Cuba) you replace “🇸🇨” (the flag of Seychelles) by “🇦🇷” (the flag of Argentina), you get “🇺🇦🇷🇺” (the flags of Ukraine and Russia). 😅
Try it on a Unix system! ⬇️
https://shiitake.us-east.host.bsky.network/xrpc/com.atproto.sync.getBlob?did=did:plc:tnde52rcbqxotp7a2cl7bmxu&cid=bafkreigs5ynmqro2l6lav3262jvifs7ubnhaoyfsbt5k2gi6p3vjo44ir4

2025-12-16 17:03:01 UTC

Obviously not enough thoughts and prayers!
RE: https://bsky.app/profile/did:plc:5o6k7jvowuyaquloafzn3cfw/post/3ma4gdqfcws24
#note1e5p…3xwn

2025-12-02 15:20:46 UTC

[Stolen from the Bad Place:]
Roughly 99.99% of games of Go ever played are AI self-play training games. So if you ever find yourself playing Go that means you’re probably an AI.

2025-11-20 18:25:25 UTC

“Earth is on fire” metaphor got a little out of hand at COP30: [www.bbc.com/news/article...](https://www.bbc.com/news/articles/ce9d9p5jrjgo )
[COP30 evacuated after fire bre...](https://www.bbc.com/news/articles/ce9d9p5jrjgo )

2025-11-10 18:25:11 UTC

Les fabricants de produits (électroniques, électroménagers, etc.) qui n'écrivent pas la référence précise du modèle sur le produit lui-même… MAIS POURQUOI, GRANDS DIEUX, POURQUOI TANT DE HAINE? 😡

2025-11-09 18:17:32 UTC

N'oubliez pas: l'hexadécimal B6 se prononce «dizante-seize» sauf chez les Belges où c'est «onzante-six».

2025-10-17 21:55:10 UTC

Some people wrote a linguistics paper on how the gender of “Covid” in French settled over time, in three continents: [doi.org/10.1017/cnj....](https://doi.org/10.1017/cnj.2023.20 ) 🤩
[Tracing the evolution of the g...](https://www.cambridge.org/core/product/791E7AF0E64741E2757C10AF1B3182A1 )