Pith Number

pith:IKYXSMZU

pith:2013:IKYXSMZUP7VQAE52AG3XRYPESI

not attested not anchored not stored refs pending

Parameterized Rural Postman Problem

Anders Yeo, Gregory Gutin, Magnus Wahlstrom

arxiv:1308.2599 v4 · 2013-08-12 · 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{IKYXSMZUP7VQAE52AG3XRYPESI}

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	2026-05-18T02:55:18.366789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42b17933347feb0013ba01b778e1e492357875bb656b0466797952fe69316065

Aliases

arxiv: 1308.2599 · arxiv_version: 1308.2599v4 · doi: 10.48550/arxiv.1308.2599 · pith_short_12: IKYXSMZUP7VQ · pith_short_16: IKYXSMZUP7VQAE52 · pith_short_8: IKYXSMZU

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/IKYXSMZUP7VQAE52AG3XRYPESI \
  | 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: 42b17933347feb0013ba01b778e1e492357875bb656b0466797952fe69316065

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44028d2ff12913be5512b98850466a591a7f9a8e65d5e931642ff11a3463cd7e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-08-12T15:45:58Z",
    "title_canon_sha256": "52197f821bf373a5c5da7f22c3a0b4ada25613a772d4d235ef1db21c0a554657"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.2599",
    "kind": "arxiv",
    "version": 4
  }
}