Pith Number

pith:WWGJK6EC

pith:2019:WWGJK6ECJWACDYAMEXNO4RD5KU

not attested not anchored not stored refs pending

A Note on Colourings of Connected Oriented Cubic Graphs

Christopher Duffy

arxiv:1908.02883 v3 · 2019-08-08 · cs.DM · 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{WWGJK6ECJWACDYAMEXNO4RD5KU}

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	2026-07-05T01:10:26.884743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b58c9578824d8021e00c25daee447d552243888b3920452fad6ee648ac957f5a

Aliases

arxiv: 1908.02883 · arxiv_version: 1908.02883v3 · doi: 10.48550/arxiv.1908.02883 · pith_short_12: WWGJK6ECJWAC · pith_short_16: WWGJK6ECJWACDYAM · pith_short_8: WWGJK6EC

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/WWGJK6ECJWACDYAMEXNO4RD5KU \
  | 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: b58c9578824d8021e00c25daee447d552243888b3920452fad6ee648ac957f5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a3473c79997d602dfad65b8f8eb7a516760a37020396825dcd4a75b711bda4a",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-08-08T00:07:44Z",
    "title_canon_sha256": "6aa91e81ef12137e13d05e62b7db11c388126016824e8babd6abca68a1db8a41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.02883",
    "kind": "arxiv",
    "version": 3
  }
}