Pith Number

pith:7CB2UOB5

pith:2009:7CB2UOB5NLL426WDI2ECDYMYXL

not attested not anchored not stored refs pending

Matrix Graph Grammars with Application Conditions

Juan de Lara Jaramillo, Pedro Pablo Perez Velasco

arxiv:0902.1809 v2 · 2009-02-11 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7CB2UOB5NLL426WDI2ECDYMYXL}

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	2026-07-04T17:15:48.490888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f883aa383d6ad7cd7ac3468821e198baf516ced79924f26d9bf6c96ece5657d4

Aliases

arxiv: 0902.1809 · arxiv_version: 0902.1809v2 · doi: 10.48550/arxiv.0902.1809 · pith_short_12: 7CB2UOB5NLL4 · pith_short_16: 7CB2UOB5NLL426WD · pith_short_8: 7CB2UOB5

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/7CB2UOB5NLL426WDI2ECDYMYXL \
  | 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: f883aa383d6ad7cd7ac3468821e198baf516ced79924f26d9bf6c96ece5657d4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "875ad2767fd74b7e3c991ded6cd1e7d3cc39adf95bc7ec734c7d43d780d2470f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2009-02-11T06:53:29Z",
    "title_canon_sha256": "c6b57b4383d0ddd5ee182388f489127a8c68a00016d3e94efe5a6794aaee2b4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1809",
    "kind": "arxiv",
    "version": 2
  }
}