Pith Number

pith:RMYK5F44

pith:2009:RMYK5F44MK42WUUV2Y5G7XOD73

not attested not anchored not stored refs pending

Matrix Graph Grammars: Transformation of Restrictions

Pedro Pablo Perez Velasco

arxiv:0912.2160 v1 · 2009-12-11 · 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{RMYK5F44MK42WUUV2Y5G7XOD73}

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	2026-07-04T17:17:38.361906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b30ae979c62b9ab5295d63a6fddc3fed15ae8f7b0dbbe99ea76b65497210ceb

Aliases

arxiv: 0912.2160 · arxiv_version: 0912.2160v1 · doi: 10.48550/arxiv.0912.2160 · pith_short_12: RMYK5F44MK42 · pith_short_16: RMYK5F44MK42WUUV · pith_short_8: RMYK5F44

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/RMYK5F44MK42WUUV2Y5G7XOD73 \
  | 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: 8b30ae979c62b9ab5295d63a6fddc3fed15ae8f7b0dbbe99ea76b65497210ceb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86a5f3a8e933fe7e7ad9358bc65f627c6fcae4a9ed33c0eb6dec2ca1fc2c3574",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2009-12-11T06:43:57Z",
    "title_canon_sha256": "b3c20e8c933d45a8d5d921f0d6ab2c7199911a8a19933698fa6121533c3047d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2160",
    "kind": "arxiv",
    "version": 1
  }
}