Pith Number

pith:UVHEQX4A

pith:2012:UVHEQX4AKYF4KEL2323OYJADZY

not attested not anchored not stored refs pending

On standard norm varieties

Alexander S. Merkurjev, Nikita A. Karpenko

arxiv:1201.1257 v2 · 2012-01-05 · 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{UVHEQX4AKYF4KEL2323OYJADZY}

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	2026-05-18T03:53:17.344486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a54e485f80560bc5117adeb6ec2403ce1695bebeab8d6b4977828b4d14fd6e4f

Aliases

arxiv: 1201.1257 · arxiv_version: 1201.1257v2 · doi: 10.48550/arxiv.1201.1257 · pith_short_12: UVHEQX4AKYF4 · pith_short_16: UVHEQX4AKYF4KEL2 · pith_short_8: UVHEQX4A

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/UVHEQX4AKYF4KEL2323OYJADZY \
  | 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: a54e485f80560bc5117adeb6ec2403ce1695bebeab8d6b4977828b4d14fd6e4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c77921f4f1fdebc44e84d206bd6319c24823878ae244f94d598dae090843167",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-01-05T18:49:21Z",
    "title_canon_sha256": "c759a605bb819557de532ddbe5609c840c54e9b111fbe60d5b7200908b050c05"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.1257",
    "kind": "arxiv",
    "version": 2
  }
}