Pith Number

pith:XJCIQ5SF

pith:2012:XJCIQ5SFSUU7PPGLQPQH646KAO

not attested not anchored not stored refs pending

A simple and fast heuristic algorithm for edge-coloring of graphs

J. Vilaltella, M.A. Fiol

arxiv:1210.5176 v1 · 2012-10-18 · math.CO · 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{XJCIQ5SFSUU7PPGLQPQH646KAO}

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	2026-05-18T03:42:53.695036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba448876459529f7bccb83e07f73ca03aba985ca2516965d3a33a038d245a9c6

Aliases

arxiv: 1210.5176 · arxiv_version: 1210.5176v1 · doi: 10.48550/arxiv.1210.5176 · pith_short_12: XJCIQ5SFSUU7 · pith_short_16: XJCIQ5SFSUU7PPGL · pith_short_8: XJCIQ5SF

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/XJCIQ5SFSUU7PPGLQPQH646KAO \
  | 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: ba448876459529f7bccb83e07f73ca03aba985ca2516965d3a33a038d245a9c6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02d9d6f5f0e29519f7e7299115b45c42280d087b0c4f3308cfff3568aaf4eba7",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-10-18T16:29:50Z",
    "title_canon_sha256": "e54d074552711a1d80f58fdc849d18ca8e427a856eb16b215e91db054cc1e972"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.5176",
    "kind": "arxiv",
    "version": 1
  }
}