Pith Number

pith:54UVWICX

pith:2013:54UVWICXRKPLBNWMVJXUKLKHGA

not attested not anchored not stored refs pending

Neutrality in the Graph Coloring Problem

Aymeric Blot (INRIA Lille - Nord Europe, Clarisse Dhaenens (INRIA Lille - Nord Europe, Laetitia Jourdan (INRIA Lille - Nord Europe, LIFL), Marie-Eleonore Marmion (INRIA Lille - Nord Europe

arxiv:1301.6092 v1 · 2013-01-25 · 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{54UVWICXRKPLBNWMVJXUKLKHGA}

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	2026-05-18T03:35:27.130414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef295b20578a9eb0b6ccaa6f452d47302b47507bfea1663ae15b590f2127a5d8

Aliases

arxiv: 1301.6092 · arxiv_version: 1301.6092v1 · doi: 10.48550/arxiv.1301.6092 · pith_short_12: 54UVWICXRKPL · pith_short_16: 54UVWICXRKPLBNWM · pith_short_8: 54UVWICX

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/54UVWICXRKPLBNWMVJXUKLKHGA \
  | 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: ef295b20578a9eb0b6ccaa6f452d47302b47507bfea1663ae15b590f2127a5d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "971fed1bd4615d30c3ec0f58f3ce2fc3f5d5fab03fa63df9d26621f8d7b237d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-01-25T17:01:18Z",
    "title_canon_sha256": "68c6aa8efa7e77e4480c67865dc2dd49f58dca4a3cc3e50b4d0400907e1a065f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6092",
    "kind": "arxiv",
    "version": 1
  }
}