Pith Number

pith:OJQZTIU7

pith:2018:OJQZTIU7QMS3WGKX6YIUJYRCMN

not attested not anchored not stored refs pending

Some properties of Bowlin and Brin's color graphs

Roger Picken, Rui Pedro Carpentier

arxiv:1804.08397 v2 · 2018-04-23 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OJQZTIU7QMS3WGKX6YIUJYRCMN}

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	2026-05-18T00:11:56.914266Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

726199a29f8325bb1957f61144e22263732e84d1916ac78053e7f00d6a46b8b7

Aliases

arxiv: 1804.08397 · arxiv_version: 1804.08397v2 · doi: 10.48550/arxiv.1804.08397 · pith_short_12: OJQZTIU7QMS3 · pith_short_16: OJQZTIU7QMS3WGKX · pith_short_8: OJQZTIU7

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/OJQZTIU7QMS3WGKX6YIUJYRCMN \
  | 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: 726199a29f8325bb1957f61144e22263732e84d1916ac78053e7f00d6a46b8b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "666f5c1e1dfc1da1275e27a7c0c009cd2ed953f9a848e894c3f048728b5d5676",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-23T13:29:36Z",
    "title_canon_sha256": "dcb47002535cb43ea12d600f1336a9d5d3abd3c1656a132de8cc1c3aafa33997"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08397",
    "kind": "arxiv",
    "version": 2
  }
}