#settheory
Live, measured metrics for the hashtag #settheory from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #settheory
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 2026-10-17 13:41 UTC2 uses by 2 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 2026-10-17 13:41 UTCNo related tags with measured usage found for #settheory.
Live pulse
measured · mastodon.social (Mastodon tag timeline) · fetched 2026-10-17 13:41 UTCEverything below is measured over the latest 40 public posts (spanning ~2270 hours).
Posting hours (UTC) — busiest: 21:00
Languages: English (35) · Russian (2) · German (1)
Avg boosts / post: 1.4
Top of the latest posts
New blog post “Starting to understand epsilon-zero”. A long time ago I said that \( ω^ω \) was the place where the countable ordinals start to get scary, and then about 18 months ago I realized I could think about it in a different way that
After many attempts on learning and failing to continue with Discrete Math and Linear Algebra, I found my new interest on #Mathematics with Set Theory. Possibly this could be a starting point for me to go to those two topics. This time, ver
After years of mixing up 2·ω (which is equal to ω, and so uninteresting) and ω·2 (which isn't) I have at last thought of a sure way to remember which is which: ω·2 is the one I want, just as ω+2 is, and for the same reason. Sheesh. #ordinal
#settheory across platforms
every network with a public tag surfaceFollow #settheory 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/settheory