Pith Number

pith:KRG3SQVV

pith:2011:KRG3SQVVD6TX4WZO4M4D4VLY5A

not attested not anchored not stored refs pending

LP-Based Approximation Algorithms for Traveling Salesman Path Problems

David B. Shmoys, Hyung-Chan An

arxiv:1105.2391 v4 · 2011-05-12 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KRG3SQVVD6TX4WZO4M4D4VLY5A}

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	2026-05-18T04:10:08.757985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

544db942b51fa77e5b2ee3383e5578e82e528b82b986a084489f2c3a16387966

Aliases

arxiv: 1105.2391 · arxiv_version: 1105.2391v4 · doi: 10.48550/arxiv.1105.2391 · pith_short_12: KRG3SQVVD6TX · pith_short_16: KRG3SQVVD6TX4WZO · pith_short_8: KRG3SQVV

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/KRG3SQVVD6TX4WZO4M4D4VLY5A \
  | 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: 544db942b51fa77e5b2ee3383e5578e82e528b82b986a084489f2c3a16387966

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0490fed72c5bc99cf50d225faa652cc7c533d233f5604a76a35d882251cf65a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-05-12T07:30:50Z",
    "title_canon_sha256": "0f2400a7e903cde25db518c79a8f50923509ad5664b11189c89c7ddbcb0a0821"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.2391",
    "kind": "arxiv",
    "version": 4
  }
}