#ultrametric
Live, measured metrics for the hashtag #ultrametric from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #ultrametric
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 · fosstodon.org (Mastodon public tags API) · fetched 2026-10-16 12:04 UTC0 uses by 0 unique accounts across the window. Real per-day counts, not estimates. Newest bar is today so far.
Related hashtags
measured · fosstodon.org (Mastodon public search API) · fetched 2026-10-16 12:04 UTCLive pulse
measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-16 12:04 UTCEverything below is measured over the latest 4 public posts (spanning ~2166 hours).
Posting hours (UTC)
Languages: English (4)
Avg boosts / post: 0.5
Top of the latest posts
New synthesis: The Trapped-Ion Ultrametric Testbed — a falsifiability register for testing p-adic structure in quantum dynamics. 16 records, one program, 5 pre-registered observables with kill-conditions, apparatus already demonstrated. DOI
New paper: "The Tree and Its Echo" — ultrametric organization from pre-numeric first principles. Before numbers: marks on a bone. Three primitives: correspondence, order, nesting. Hierarchy without metrics. The independence assumption is th
New: "The Primordial Mark" — one operation (drawing a distinction) generates the ultrametric tree underlying spin glasses, p-adic numbers, QCD jets, and the Classification of Finite Simple Groups. The CFSG is exhaust. The engine is the Mark
What “ultrametric” means
WikipediaIn mathematics, an ultrametric space is a metric space in which the triangle inequality is strengthened to for all , , and . Sometimes the associated metric is also called a non-Archimedean metric or super-metric.
“Ultrametric space” on Wikipedia (CC BY-SA) →#ultrametric across platforms
every network with a public tag surfaceFollow #ultrametric 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/ultrametric