#cohomology

Live, measured metrics for the hashtag #cohomology from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.

hashtag.org network · sponsored

Own #cohomology

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.

$23.52/ year · 10-character #name
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card via hashtag.org · tokens via hashtag.space
0
Uses / 7 days
Mastodon
0
Accounts / 7 days
Mastodon
17
Recent posts
Mastodon
~0/hr
Recent pace
Mastodon · last 17
0.1
Avg reactions / post
Mastodon · last 17
—
Reddit posts / month
Reddit search
—
Open-web mentions
hashtag.org Firehose

Day-by-day usage

measured · fosstodon.org (Mastodon public tags API) · fetched 2026-10-18 07:16 UTC
0
10-12
0
10-13
0
10-14
0
10-15
0
10-16
0
10-17
0
10-18

0 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 2026-10-18 07:16 UTC

No related tags with measured usage found for #cohomology.

Live pulse

measured · fosstodon.org (Mastodon tag timeline) · fetched 2026-10-18 07:16 UTC

Everything below is measured over the latest 17 public posts (spanning ~29366 hours).

Posting hours (UTC) — busiest: 20:00

00:0012:0023:00

Languages: English (17)

Avg boosts / post: 0.4

Top of the latest posts

  • from "The heart of cohomology" by Goro Kato (2006) https://link.springer.com/book/10.1007/1-4020-5036-4?utm_source=dlvr.it&utm_medium=mastodon #math #cohomology

    tom@[email protected]♥ 1↻ 02024-01-18 20:00 UTCView post →
  • DonutWorld2 Blogpost: https://blog.illestpreacha.com/mina2024talking For the 8th day of #MinaCoding2024 : "Talking" , I was talking to someone about today being Donut Day. So decided to remix with @hydra a previous donut piece called DonutW

    illestpreacha@[email protected]♥ 0↻ 02024-06-07 19:02 UTCView post →
  • I'm featured in this week's Codepen Spark for my Cohomology piece: https://codepen.io/spark/363 #mathart #codepen #p5js #creativeCoding #processing #cohomology #torus

    Fractal Kitty@[email protected]♥ 0↻ 12023-10-23 19:36 UTCView post →

What “cohomology” means

Wikipedia

In mathematics, specifically in homology theory and algebraic topology, cohomology is a way of attaching algebraic invariants to a topological space or other mathematical object that encode its properties in a way that is often computable. Cohomology is often related to questions of whether some local property of the space is obstructed when passing to a global property. For example, the Möbius strip is not the product space of a line segment with a circle, but locally on any segment of the circ

“Cohomology” on Wikipedia (CC BY-SA) →

#cohomology across platforms

every network with a public tag surface

Follow #cohomology 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/cohomology