#semigroups
Live, measured metrics for the hashtag #semigroups from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #semigroups
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-10-15 09:41 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-10-15 09:41 UTCLive pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-10-15 09:41 UTCEverything below is measured over the latest 4 public posts (spanning ~23283 hours).
Posting hours (UTC)
Languages: English (4)
Avg boosts / post: 2.3
Top of the latest posts
My #semigroups lecture notes ‘Nine Chapters on the Semigroup Art’ are now accessible #TaggedPDF files: https://archive.org/details/cain_semigroups_a4_screen I have been working to update my LuaLaTeX style "minos" [https://codeberg.org/ajcai
My former student lent me their printed and bound copy of ‘Nine Chapters on the Semigroup Art’, my lecture notes for a tour through semigroup theory, in which they had marked various typos and minor errors, and points where they thought mor
Just want to share the youtube channel of Thomas Kern, who does automata stuff. Here is a great video of him going through the Krohn-Rhodes theorem https://www.youtube.com/watch?v=3b1YRqDQ25w #automata #semigroups
What “semigroups” means
WikipediaIn mathematics, a semigroup is an algebraic structure consisting of a set together with an associative internal binary operation on it. In mathematical analysis, the term also appears in the theory of one-parameter operator semigroups: see C0-semigroup.
“Semigroup” on Wikipedia (CC BY-SA) →#semigroups across platforms
every network with a public tag surfaceFollow #semigroups straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/semigroups