Pith Number

pith:PP37OLKS

pith:2020:PP37OLKSNMBGBO2NBNJZYJHWO7

not attested not anchored not stored refs pending

Learn to Design the Heuristics for Vehicle Routing Problem

Ganzhong Luo, Lei Gao, Mingxiang Chen, Nuoyi Zhu, Qichang Chen, Zhixin Liu

arxiv:2002.08539 v1 · 2020-02-20 · cs.NE · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PP37OLKSNMBGBO2NBNJZYJHWO7}

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.

Cited by

1 paper in Pith

LRM-1B: Towards Large Routing Model

Receipt and verification

First computed	2026-07-05T00:42:35.927578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bf7f72d526b0260bb4d0b539c24f677f35530ed370fb39a970987cad771aa55

Aliases

arxiv: 2002.08539 · arxiv_version: 2002.08539v1 · doi: 10.48550/arxiv.2002.08539 · pith_short_12: PP37OLKSNMBG · pith_short_16: PP37OLKSNMBGBO2N · pith_short_8: PP37OLKS

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/PP37OLKSNMBGBO2NBNJZYJHWO7 \
  | 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: 7bf7f72d526b0260bb4d0b539c24f677f35530ed370fb39a970987cad771aa55

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a46f02cd3e33e7fb7e9023fb39cd3a5d9ae0cf8ea81938dd437c1ee955bfddd8",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2020-02-20T02:39:02Z",
    "title_canon_sha256": "4e1d3fcb269ea95fceacf1cd050dba1a6f7377e692de76c7b169a38ba73fec60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.08539",
    "kind": "arxiv",
    "version": 1
  }
}