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"empty"

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Question: How many people like me does it take to screw in a light bulb?
Answer: 0.9967±0.004 (after six iterations).

","updated":"2026-02-21 10:20:10.716Z","user":"","username":"ma𝕏pool"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-22 05:05:37.494Z","domain":"masto.machlis.com","followerCount":3144,"followers":"https://masto.machlis.com/users/smach/followers","following":"https://masto.machlis.com/users/smach/following","followingCount":494,"icon":"https://cdn.masto.host/mastomachliscom/accounts/avatars/110/624/892/201/461/660/original/274126b8db932ae8.jpg","id":"jzxvj8ndiuk8xpi","inbox":"https://masto.machlis.com/users/smach/inbox","iri":"https://masto.machlis.com/users/smach","isLocal":false,"last_fetched":"2026-02-21 09:59:33.077Z","outbox":"https://masto.machlis.com/users/smach/outbox","preferred_username":"smach","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAt2kxGE4DiBehCx1zWOoW\nA7wNGsXOSC7O/tuQB5UY8qa6WXPnKmWH2lYmMbr7wlZZFNynyvAjxvuxXUGCJ2sU\nvLd+3u8KNAvAlDvX26FYCdw52+5Cr49bOGxdoCLphvSGEDZGDg0HpFSti/64D3Nu\n72vU004qtnqp1z3C3OB8fJi01m/VFtX1BTkuVPVHBgC5x/gNdwRBrxjCQo3ishZA\nVAUyigWB9j6AcCG4itoZG0rU7L/D9wUDWhk8dEVyJhVTkJxqgDoifrX2SpTfYuYs\nKIztXgdAXrfUgxcHRZWIEjfMLLhxW0BRnubrB+YAZEeTYhSs3tkH4vScQgQjyf9G\n+QIDAQAB\n-----END PUBLIC KEY-----\n","published":"2023-06-29 00:00:00.000Z","summary":"

Author of Practical R for Mass Communication & Journalism
Still ❤️ R after all these years #RStats
Bluesky @smachlis.bsky.social
Can't imagine life without writing
Having fun with #GenAI
Learning #ASL
(Mostly) retired after a long career as a tech journalist. Eagerly exploring my next chapter.
Passionate about vibrant aging
Other interests: #Photography #DigitialDarkroom #Running #Bicycling #Crochet Pedestrian/bike-friendly cities
#NoBridge

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Postdoc at Johns Hopkins formalizing mathematics

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Posting images from Wageningen University's online archive of 1,180 root system drawings.

"The outcome of 40 years of root system excavations in Europe."

https://www.openculture.com/2022/01/1100-delicate-drawings-of-root-systems-reveals-the-hidden-world-of-plants.html

Shout-out to @liaizon for the idea.

","updated":"2026-02-21 10:14:40.538Z","user":"","username":"Roots"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-26 11:26:40.535Z","domain":"mathstodon.xyz","followerCount":13,"followers":"https://mathstodon.xyz/users/maybe_algebraiclogic/followers","following":"https://mathstodon.xyz/users/maybe_algebraiclogic/following","followingCount":69,"icon":"https://media.mathstodon.xyz/accounts/avatars/114/177/543/775/635/754/original/550f167fa5df0102.png","id":"bwvls20munxzxaz","inbox":"https://mathstodon.xyz/users/maybe_algebraiclogic/inbox","iri":"https://mathstodon.xyz/users/maybe_algebraiclogic","isLocal":false,"last_fetched":"2026-02-21 11:25:09.110Z","outbox":"https://mathstodon.xyz/users/maybe_algebraiclogic/outbox","preferred_username":"maybe_algebraiclogic","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2LUXytO2kzpdh4OGujfo\nF8PX2tS3d2mDHrtMITJXOlVxvbzxoNDD5/4h9K1cCZ21J1yr9PK2B/dRlcqKzuDB\ncO5TQfxkmo4TRxG2HOxJudQXiE0P+rJzrCmGeDm+/fqkGKnrVbwRLTMidmIUz+7o\nFLem2kgvJOlLhC1FEZrRq+7x+7Sm4EiuOKX9EeGPg36fqtPZvMOO1c6zCIKT1LkJ\n3FGfBBQTd2MPlr9ZBu7aZVBa8M4somGMMyyPMo0D3sIKIAgMkhBi88pW/rIJBR8n\nic6LaflRSFo4Sfi/SRdCdBU3wnGg4ghyV36SLBJ4U44QuzgDkUkG/pjxYX9hs3E2\nKQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2025-03-17 00:00:00.000Z","summary":"

Interested in algebra, logic, and universal algebra

","updated":"2026-02-21 11:25:09.110Z","user":"","username":"AlgebraicLogic"},{"collectionId":"pbc_1295301207","collectionName":"activitypub_actors","created":"2026-01-29 11:32:14.851Z","domain":"mathstodon.xyz","followerCount":211,"followers":"https://mathstodon.xyz/users/leonardopacheco/followers","following":"https://mathstodon.xyz/users/leonardopacheco/following","followingCount":99,"icon":"https://media.mathstodon.xyz/accounts/avatars/000/288/993/original/2ade7e7cd703101e.jpeg","id":"hu8h9199p8jdhm6","inbox":"https://mathstodon.xyz/users/leonardopacheco/inbox","iri":"https://mathstodon.xyz/users/leonardopacheco","isLocal":false,"last_fetched":"2026-02-21 11:25:10.536Z","outbox":"https://mathstodon.xyz/users/leonardopacheco/outbox","preferred_username":"leonardopacheco","public_key":"-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyEH/Z9cgYlWoIOWF51GX\nXFQfdFCZbvVBf4AYhBjWrcyutHtwNWg69xQSDaJArpOv4itJExu9gfgNJ8G3xiOz\nVbTTb+NUJMOEkhYQbCSWAmvtN1rUkGu7P1f+8LrWnsUa5xS/hcajvLlPrlWTGjhd\njm61Q6lSk+s9GCLgpjTr17dW0IoTC5y2IIskTLG/CIKBadPoUvgLgNnpY8khs5CH\nDD+YSikdzpYa2/68HdmgYKpt95+UwJYo3MnZfKQL8CZuTXTTJcTBAajZ+WnSXsxv\nLuJgnsRqGbWJ9IGiRnR7Sj4tSUEOCtKzVV2xlBzCwhhoo/fxym/F1eLKql5Qae8I\nuQIDAQAB\n-----END PUBLIC KEY-----\n","published":"2022-04-26 00:00:00.000Z","summary":"

(I'm not active on Mathstodon recently; please reach me by email.)

Logic at Institute of Science Tokyo.
Mainly interested in games, modal logic and non-classical logic.
Currently thinking about diamonds in non-classical settings, but I also did some work in reverse math before.
By games I mean both mathematical ones and computer ones.

","updated":"2026-02-21 11:25:10.536Z","user":"","username":"Leonardo Pacheco"}],"page":1,"perPage":10,"totalItems":58,"totalPages":6}

David C. Norris 🇺🇦

Following