Pith Number

pith:QZSHAENO

pith:2012:QZSHAENOKI6P2UQYD7A2TASVIW

not attested not anchored not stored refs pending

Examples of Sweedler cohomology in positive characteristic

Pierre Guillot

arxiv:1202.5951 v4 · 2012-02-27 · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZSHAENOKI6P2UQYD7A2TASVIW}

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	2026-05-18T03:01:54.657502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86647011ae523cfd52181fc1a9825545a47c08291d4a87223d93acd6e24f6666

Aliases

arxiv: 1202.5951 · arxiv_version: 1202.5951v4 · doi: 10.48550/arxiv.1202.5951 · pith_short_12: QZSHAENOKI6P · pith_short_16: QZSHAENOKI6P2UQY · pith_short_8: QZSHAENO

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/QZSHAENOKI6P2UQYD7A2TASVIW \
  | 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: 86647011ae523cfd52181fc1a9825545a47c08291d4a87223d93acd6e24f6666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11ee2e653c4b0f16f85dff4e1618913d622cdc9b4498c4f3092fa370ce3e43cc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2012-02-27T14:26:39Z",
    "title_canon_sha256": "8f53af2a7fe3b07958b5aac725ce8e07a10edac51cab1b72e02297c5817658c6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5951",
    "kind": "arxiv",
    "version": 4
  }
}