Pith Number

pith:VR4DHQ65

pith:2014:VR4DHQ65V2XO74EMWPGXERXHW7

not attested not anchored not stored refs pending

A Search of The Four-Color Theorem and its Higher Dimensional Generalization

Qizhi Wang

arxiv:1408.1927 v1 · 2014-08-02 · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VR4DHQ65V2XO74EMWPGXERXHW7}

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	2026-05-18T02:45:38.851546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac7833c3ddaeaeeff08cb3cd7246e7b7e7287ee1f094b9f30ca6c995eb5dbc0e

Aliases

arxiv: 1408.1927 · arxiv_version: 1408.1927v1 · doi: 10.48550/arxiv.1408.1927 · pith_short_12: VR4DHQ65V2XO · pith_short_16: VR4DHQ65V2XO74EM · pith_short_8: VR4DHQ65

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/VR4DHQ65V2XO74EMWPGXERXHW7 \
  | 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: ac7833c3ddaeaeeff08cb3cd7246e7b7e7287ee1f094b9f30ca6c995eb5dbc0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62d7c5d81bcd47aa70035aa0fbdfd0de64bb7751870c9c3276fb064881bd4790",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2014-08-02T00:28:56Z",
    "title_canon_sha256": "9531df1631fa23b25734882f356bc1f4020ffd7e621a5bf3caf43cf3286db019"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1927",
    "kind": "arxiv",
    "version": 1
  }
}