Pith Number

pith:GLERFKNC

pith:2006:GLERFKNCAPW6D2SESHEXCDNUH6

not attested not anchored not stored refs pending

Third Mac Lane cohomology

H.-J. Baues, M. Jibladze, T. Pirashvili

arxiv:math/0604447 v3 · 2006-04-20 · math.KT · 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{GLERFKNCAPW6D2SESHEXCDNUH6}

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	2026-07-04T14:54:37.479197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32c912a9a203ede1ea4491c9710db43fbff27a833c63f791b7827d2a3b575d12

Aliases

arxiv: math/0604447 · arxiv_version: math/0604447v3 · doi: 10.48550/arxiv.math/0604447 · pith_short_12: GLERFKNCAPW6 · pith_short_16: GLERFKNCAPW6D2SE · pith_short_8: GLERFKNC

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/GLERFKNCAPW6D2SESHEXCDNUH6 \
  | 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: 32c912a9a203ede1ea4491c9710db43fbff27a833c63f791b7827d2a3b575d12

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3a02833fd815bcd1492602fc4f72bf19e6056087d4a1d163272244fca796405",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.KT",
    "submitted_at": "2006-04-20T10:57:59Z",
    "title_canon_sha256": "f352bb51873a7aaa745e0e088768d6e116b3e2b3377538232fa08190e3a607b6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0604447",
    "kind": "arxiv",
    "version": 3
  }
}