Pith Number

pith:ED4FDJ7O

pith:2014:ED4FDJ7OKD3ZBJIAQQ4UCOOAZX

not attested not anchored not stored refs pending

On rigidity of Nichols algebras

Iv\'an Angiono, Mikhail Kochetov, Mitja Mastnak

arxiv:1412.2147 v2 · 2014-12-05 · math.RA · 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{ED4FDJ7OKD3ZBJIAQQ4UCOOAZX}

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	2026-05-18T01:59:58.065679Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f851a7ee50f790a50084394139c0cdf3c966a24cc970468ae6f793428d3711

Aliases

arxiv: 1412.2147 · arxiv_version: 1412.2147v2 · doi: 10.48550/arxiv.1412.2147 · pith_short_12: ED4FDJ7OKD3Z · pith_short_16: ED4FDJ7OKD3ZBJIA · pith_short_8: ED4FDJ7O

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/ED4FDJ7OKD3ZBJIAQQ4UCOOAZX \
  | 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: 20f851a7ee50f790a50084394139c0cdf3c966a24cc970468ae6f793428d3711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10e184e9e89dcdf9dcb513ddd6e615ea1910dc5fdef36fa1251cc6f671f1b6fe",
    "cross_cats_sorted": [
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2014-12-05T21:28:42Z",
    "title_canon_sha256": "d9ed7045052eba5cffea005314250a2c633cc3db16b71b6ee04742a6820598a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.2147",
    "kind": "arxiv",
    "version": 2
  }
}