Pith Number

pith:3W3RL2OS

pith:2010:3W3RL2OS6GXJFNOPNXHOMFTBSW

not attested not anchored not stored refs pending

Lin-Kernighan Heuristic Adaptations for the Generalized Traveling Salesman Problem

Daniel Karapetyan, Gregory Gutin

arxiv:1003.5330 v2 · 2010-03-27 · 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{3W3RL2OS6GXJFNOPNXHOMFTBSW}

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	2026-05-18T04:02:25.359479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ddb715e9d2f1ae92b5cf6dcee6166195a6798d8704c63aa86747d1949228ccab

Aliases

arxiv: 1003.5330 · arxiv_version: 1003.5330v2 · doi: 10.48550/arxiv.1003.5330 · pith_short_12: 3W3RL2OS6GXJ · pith_short_16: 3W3RL2OS6GXJFNOP · pith_short_8: 3W3RL2OS

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/3W3RL2OS6GXJFNOPNXHOMFTBSW \
  | 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: ddb715e9d2f1ae92b5cf6dcee6166195a6798d8704c63aa86747d1949228ccab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "164ec6c981a8319961ed4ce7abe128224186bee3a4577b131eba6790cd18e1a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2010-03-27T22:46:05Z",
    "title_canon_sha256": "3caebcf2960191dbfd4ca5a3b5797e5178a97889b4af5b5347566defcb462903"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5330",
    "kind": "arxiv",
    "version": 2
  }
}