Pith Number

pith:UHZ64A7S

pith:2014:UHZ64A7SNUQCTNYYSASH3L6Z76

not attested not anchored not stored refs pending

On computation of the first Baues--Wirsching cohomology of a freely-generated small category

Yasuhide Numata, Yasuhiro Momose

arxiv:1402.6085 v1 · 2014-02-25 · math.CT · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHZ64A7SNUQCTNYYSASH3L6Z76}

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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	2026-05-18T02:57:51.650492Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1f3ee03f26d2029b71890247dafd9ff8988a25d6e53f0967b8cd8aa8e76a0b7

Aliases

arxiv: 1402.6085 · arxiv_version: 1402.6085v1 · doi: 10.48550/arxiv.1402.6085 · pith_short_12: UHZ64A7SNUQC · pith_short_16: UHZ64A7SNUQCTNYY · pith_short_8: UHZ64A7S

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/UHZ64A7SNUQCTNYYSASH3L6Z76 \
  | 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: a1f3ee03f26d2029b71890247dafd9ff8988a25d6e53f0967b8cd8aa8e76a0b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac7449129adcb0c777dc3491c2451de6022d9c1791ba9ba90d26fc248edf837e",
    "cross_cats_sorted": [
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2014-02-25T08:30:19Z",
    "title_canon_sha256": "23f199551bfd51e71e743f971cfd31aabc61a1576b8411b2a1bd1eeaf6e7c649"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.6085",
    "kind": "arxiv",
    "version": 1
  }
}