Pith Number

pith:EAXIMRTR

pith:2012:EAXIMRTRUQ7NCZSEA5A3TRGX7W

not attested not anchored not stored refs pending

Solving the minimum labelling spanning tree problem using intelligent optimization

Jose Andres Moreno-Perez, Nenad Mladenovic, Sergio Consoli

arxiv:1201.2320 v4 · 2012-01-11 · math.OC · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EAXIMRTRUQ7NCZSEA5A3TRGX7W}

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	2026-05-18T02:57:24.382879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

202e864671a43ed166440741b9c4d7fda309eef5a12865c465c002aca1e7162f

Aliases

arxiv: 1201.2320 · arxiv_version: 1201.2320v4 · doi: 10.48550/arxiv.1201.2320 · pith_short_12: EAXIMRTRUQ7N · pith_short_16: EAXIMRTRUQ7NCZSE · pith_short_8: EAXIMRTR

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/EAXIMRTRUQ7NCZSEA5A3TRGX7W \
  | 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: 202e864671a43ed166440741b9c4d7fda309eef5a12865c465c002aca1e7162f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d028fa4b7b2e12f43ea35e93b2b0f0f0415a398513c470d09afe90150129f4ce",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-01-11T15:00:36Z",
    "title_canon_sha256": "e5e92ee239012a9cb4d37abf1c8e663748bb08f2f511fb9fb53419c1d8bc7c31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.2320",
    "kind": "arxiv",
    "version": 4
  }
}