Pith Number

pith:FNEVQ2CG

pith:2013:FNEVQ2CGKCCTBRV2VEWXHLZWUW

not attested not anchored not stored refs pending

The homology graph of a higher dimensional automaton

Thomas Kahl

arxiv:1307.7994 v1 · 2013-07-30 · math.AT · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FNEVQ2CGKCCTBRV2VEWXHLZWUW}

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	2026-05-18T03:17:12.684276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b49586846508530c6baa92d73af36a5a539de956d401abf892cd2d66270090e

Aliases

arxiv: 1307.7994 · arxiv_version: 1307.7994v1 · doi: 10.48550/arxiv.1307.7994 · pith_short_12: FNEVQ2CGKCCT · pith_short_16: FNEVQ2CGKCCTBRV2 · pith_short_8: FNEVQ2CG

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/FNEVQ2CGKCCTBRV2VEWXHLZWUW \
  | 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: 2b49586846508530c6baa92d73af36a5a539de956d401abf892cd2d66270090e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9971cfe628c57cce7c13f85aaa74297b00630ff82a0f34d065fa0d618e7ffca9",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-07-30T14:25:26Z",
    "title_canon_sha256": "2d19b289b4310fb8de4ea6561578e4fee96aa217021a6cbaccc146acbf9b6346"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7994",
    "kind": "arxiv",
    "version": 1
  }
}