Pith Number

pith:K7776XII

pith:2012:K7776XIIN4IBISA6FMKQFINAYW

not attested not anchored not stored refs pending

Persistent Homology of Filtered Covers

Maia Fraser

arxiv:1202.6132 v1 · 2012-02-28 · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K7776XIIN4IBISA6FMKQFINAYW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:01:14.156348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57ffff5d086f1014481e2b1502a1a0c598deba0d3d5fc3c7cb70b99a99ecc59c

Aliases

arxiv: 1202.6132 · arxiv_version: 1202.6132v1 · doi: 10.48550/arxiv.1202.6132 · pith_short_12: K7776XIIN4IB · pith_short_16: K7776XIIN4IBISA6 · pith_short_8: K7776XII

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/K7776XIIN4IBISA6FMKQFINAYW \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 57ffff5d086f1014481e2b1502a1a0c598deba0d3d5fc3c7cb70b99a99ecc59c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab478da084b7d318fd10cb4db893e420ff9895e234e48a2c699c7af10f197305",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2012-02-28T06:19:12Z",
    "title_canon_sha256": "d25a86d8bed77833a406fdc00f8703195bdaa9e233add3f54d0a6ff004ff63de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6132",
    "kind": "arxiv",
    "version": 1
  }
}