Pith Number

pith:MS2FHKFN

pith:2008:MS2FHKFNLL4SX4DLJGIAFRWZNM

not attested not anchored not stored refs pending

A quadratic algorithm for road coloring

Dominique Perrin, Marie-Pierre B\'eal

arxiv:0803.0726 v9 · 2008-03-05 · cs.DS · 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{MS2FHKFNLL4SX4DLJGIAFRWZNM}

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	2026-05-18T03:22:17.632645Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64b453a8ad5af92bf06b499002c6d96b1002b093b70dd09921d5fee31328ad49

Aliases

arxiv: 0803.0726 · arxiv_version: 0803.0726v9 · doi: 10.48550/arxiv.0803.0726 · pith_short_12: MS2FHKFNLL4S · pith_short_16: MS2FHKFNLL4SX4DL · pith_short_8: MS2FHKFN

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/MS2FHKFNLL4SX4DLJGIAFRWZNM \
  | 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: 64b453a8ad5af92bf06b499002c6d96b1002b093b70dd09921d5fee31328ad49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "337953896e91995e86af183855968b55d1bf1c6bd4e895a5704d6ce841ccffeb",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2008-03-05T20:35:54Z",
    "title_canon_sha256": "116607ff961363fb65fe189b286d7683f01b37d8e47fa79f4c1e2ecf2851ec47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.0726",
    "kind": "arxiv",
    "version": 9
  }
}