Pith Number

pith:HJ7Y5OZ6

pith:2012:HJ7Y5OZ6NTKCPGKXHS4SXDATHN

not attested not anchored not stored refs pending

Reasoning on Schemata of Formulae

Mnacho Echenim, Nicolas Peltier

arxiv:1204.2990 v1 · 2012-04-12 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HJ7Y5OZ6NTKCPGKXHS4SXDATHN}

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	2026-05-18T03:57:54.278857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a7f8ebb3e6cd42799573cb92b8c133b4adf2fb7b9dc41e9429f9297f33affb3

Aliases

arxiv: 1204.2990 · arxiv_version: 1204.2990v1 · doi: 10.48550/arxiv.1204.2990 · pith_short_12: HJ7Y5OZ6NTKC · pith_short_16: HJ7Y5OZ6NTKCPGKX · pith_short_8: HJ7Y5OZ6

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/HJ7Y5OZ6NTKCPGKXHS4SXDATHN \
  | 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: 3a7f8ebb3e6cd42799573cb92b8c133b4adf2fb7b9dc41e9429f9297f33affb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a9096e77df055d4e35cc7142e8ecc7c7b05c71ae8106ba72bd86de329274b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-04-12T15:06:00Z",
    "title_canon_sha256": "d6498d225f8102a34443fe05e5b7752dd3d61e464e433fd5ce01c7a2f4ae03e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2990",
    "kind": "arxiv",
    "version": 1
  }
}