Pith Number

pith:M4LBLJ6M

pith:2008:M4LBLJ6MZCMAZFHALWLTDVRLSE

not attested not anchored not stored refs pending

On a remark by Y. Namikawa

Michele Rossi

arxiv:0807.4104 v4 · 2008-07-25 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4LBLJ6MZCMAZFHALWLTDVRLSE}

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	2026-05-18T02:44:07.346526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

671615a7ccc8980c94e05d9731d62b9104799092db2262d08182f9ecbda7a22b

Aliases

arxiv: 0807.4104 · arxiv_version: 0807.4104v4 · doi: 10.48550/arxiv.0807.4104 · pith_short_12: M4LBLJ6MZCMA · pith_short_16: M4LBLJ6MZCMAZFHA · pith_short_8: M4LBLJ6M

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/M4LBLJ6MZCMAZFHALWLTDVRLSE \
  | 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: 671615a7ccc8980c94e05d9731d62b9104799092db2262d08182f9ecbda7a22b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cb86388b4c63f05a94031f933bfd948115ea320f7cfd3c6bd28af02835a1794",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-07-25T14:16:55Z",
    "title_canon_sha256": "b0480b4820861448e6c27af9a2ac0e1f3cda314df0ead5599b0e5a5d01b8f06d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.4104",
    "kind": "arxiv",
    "version": 4
  }
}