Pith Number

pith:JQQ3AMWD

pith:2013:JQQ3AMWDELKICDFEDDK26DPP35

not attested not anchored not stored refs pending

Combinatorial optimization with 2-joins

Kristina Vu\v{s}kovi\'c, Nicolas Trotignon

arxiv:1309.1547 v1 · 2013-09-06 · 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{JQQ3AMWDELKICDFEDDK26DPP35}

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	2026-05-18T01:18:19.633161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c21b032c322d4810ca418d5af0defdf553046a784306efb450dc09326c81542

Aliases

arxiv: 1309.1547 · arxiv_version: 1309.1547v1 · doi: 10.48550/arxiv.1309.1547 · pith_short_12: JQQ3AMWDELKI · pith_short_16: JQQ3AMWDELKICDFE · pith_short_8: JQQ3AMWD

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/JQQ3AMWDELKICDFEDDK26DPP35 \
  | 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: 4c21b032c322d4810ca418d5af0defdf553046a784306efb450dc09326c81542

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1945aa45a31010f368aeb057b4531b3f5e974f30eed3f68531dff2b84cdeb613",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-09-06T06:45:29Z",
    "title_canon_sha256": "6065c1d5ed39b866bb8e6443d53e5b9e840590a1eb86076add540260f2e948d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1547",
    "kind": "arxiv",
    "version": 1
  }
}