Pith Number

pith:A2SFQ4CW

pith:2018:A2SFQ4CWP3HFD5D72P6EAPGHK7

not attested not anchored not stored refs pending

A Hybrid Heuristic for a Broad Class of Vehicle Routing Problems with Heterogeneous Fleet

Anand Subramanian, Christian Prins, Luiz Satoru Ochi, Puca Huachi Vaz Penna, Thibaut Vidal

arxiv:1803.01930 v1 · 2018-03-05 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2SFQ4CWP3HFD5D72P6EAPGHK7}

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	2026-05-18T00:21:56.288722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06a45870567ece51f47fd3fc403cc757f3f615d7d9c82c87c17bab08ee1f55eb

Aliases

arxiv: 1803.01930 · arxiv_version: 1803.01930v1 · doi: 10.48550/arxiv.1803.01930 · pith_short_12: A2SFQ4CWP3HF · pith_short_16: A2SFQ4CWP3HFD5D7 · pith_short_8: A2SFQ4CW

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/A2SFQ4CWP3HFD5D72P6EAPGHK7 \
  | 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: 06a45870567ece51f47fd3fc403cc757f3f615d7d9c82c87c17bab08ee1f55eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87db953abc9056c2e9a68a714433ee31a0aa4c6c09939be63c37f31a883a3742",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2018-03-05T21:20:06Z",
    "title_canon_sha256": "22ce9bd54bf2ab57738c73535f900e4008101f94ce33597afe85f567502a1d5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01930",
    "kind": "arxiv",
    "version": 1
  }
}