Pith Number

pith:EURWK6S2

pith:2014:EURWK6S2CIISZIKMOL2VORFBEG

not attested not anchored not stored refs pending

A Three-Phase Search Approach for the Quadratic Minimum Spanning Tree Problem

Jin-Kao Hao, Zhang-Hua Fu

arxiv:1402.1379 v1 · 2014-02-06 · cs.DS · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EURWK6S2CIISZIKMOL2VORFBEG}

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	2026-05-18T02:59:59.155372Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2523657a5a12112ca14c72f55744a121a18c9c671715d644f31ab9caff74cd5a

Aliases

arxiv: 1402.1379 · arxiv_version: 1402.1379v1 · doi: 10.48550/arxiv.1402.1379 · pith_short_12: EURWK6S2CIIS · pith_short_16: EURWK6S2CIISZIKM · pith_short_8: EURWK6S2

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/EURWK6S2CIISZIKMOL2VORFBEG \
  | 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: 2523657a5a12112ca14c72f55744a121a18c9c671715d644f31ab9caff74cd5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9611712b96a9f410c0abceb8997b3cad93bd46dbb41223c26fcce3955bcbb68d",
    "cross_cats_sorted": [
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-02-06T15:31:49Z",
    "title_canon_sha256": "f75d33bcd7b78c856a64ba30e4fedfa63d75b0d124b98533656f65220e021bfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.1379",
    "kind": "arxiv",
    "version": 1
  }
}