Pith Number

pith:RQ4RDZ24

pith:2011:RQ4RDZ24JH5GXWUEEUASAL4ONM

not attested not anchored not stored refs pending

A polyhedral approach for the Equitable Coloring Problem

Daniel Severin, Graciela Nasini, Isabel M\'endez-D\'iaz

arxiv:1106.3348 v2 · 2011-06-16 · 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{RQ4RDZ24JH5GXWUEEUASAL4ONM}

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	2026-05-18T02:21:43.907475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c3911e75c49fa6bda842501202f8e6b23a34f9c96bd9ed34c69c5d88018a94a

Aliases

arxiv: 1106.3348 · arxiv_version: 1106.3348v2 · doi: 10.48550/arxiv.1106.3348 · pith_short_12: RQ4RDZ24JH5G · pith_short_16: RQ4RDZ24JH5GXWUE · pith_short_8: RQ4RDZ24

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/RQ4RDZ24JH5GXWUEEUASAL4ONM \
  | 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: 8c3911e75c49fa6bda842501202f8e6b23a34f9c96bd9ed34c69c5d88018a94a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c26474b6dc04926baa4cb9b93936f0f035b262886292afc87d90b06b1931c04",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-06-16T21:01:16Z",
    "title_canon_sha256": "46a61dbc88c3f0fd1f41144c58fb1e37bb605f5fc64c7e187a4fe9db6b15b371"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3348",
    "kind": "arxiv",
    "version": 2
  }
}