Pith Number

pith:BWATHST5

pith:2013:BWATHST5BOC7CIZH4WTOAFSDIO

not attested not anchored not stored refs pending

A memetic algorithm for the minimum sum coloring problem

Jean-Philippe Hamiez, Jin-Kao Hao, Yan Jin

arxiv:1304.2641 v1 · 2013-04-09 · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BWATHST5BOC7CIZH4WTOAFSDIO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T03:00:00.983976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d8133ca7d0b85f12327e5a6e0164343b81a858f5f2d4f6e422910b618b85adf

Aliases

arxiv: 1304.2641 · arxiv_version: 1304.2641v1 · doi: 10.48550/arxiv.1304.2641 · pith_short_12: BWATHST5BOC7 · pith_short_16: BWATHST5BOC7CIZH · pith_short_8: BWATHST5

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/BWATHST5BOC7CIZH4WTOAFSDIO \
  | 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: 0d8133ca7d0b85f12327e5a6e0164343b81a858f5f2d4f6e422910b618b85adf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6377a8848b6f929cbf96a18b591080edf4eca8aa7bbb5ff777e64435cc18180",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-04-09T15:54:53Z",
    "title_canon_sha256": "51ad6d25455c0f6961f1eb801538a0b12a80e1da3b74fe2d7e96eebebc4a81b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2641",
    "kind": "arxiv",
    "version": 1
  }
}