Pith Number

pith:QYPOVT4N

pith:2019:QYPOVT4NS5BTHY3LWFJ4BK55SQ

not attested not anchored not stored refs pending

A Game of Cops and Robbers on Graphs with Periodic Edge-Connectivity

Jakob T. Spooner, Thomas Erlebach

arxiv:1908.06828 v1 · 2019-08-19 · cs.DS · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QYPOVT4NS5BTHY3LWFJ4BK55SQ}

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	2026-07-04T23:58:19.747218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

861eeacf8d974333e36bb153c0abbd942f158a51b39da75276c2bdcb16e87d4d

Aliases

arxiv: 1908.06828 · arxiv_version: 1908.06828v1 · doi: 10.48550/arxiv.1908.06828 · pith_short_12: QYPOVT4NS5BT · pith_short_16: QYPOVT4NS5BTHY3L · pith_short_8: QYPOVT4N

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/QYPOVT4NS5BTHY3LWFJ4BK55SQ \
  | 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: 861eeacf8d974333e36bb153c0abbd942f158a51b39da75276c2bdcb16e87d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "936f1cc6acc8ea204a487737cb6cb9eaa8853134d5f7c5ca3cc1a8c5ad76cf1c",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-08-19T14:27:23Z",
    "title_canon_sha256": "f123c581f52ea55148f036c181573c92e9a62a531da4a4107bd6072e850237af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06828",
    "kind": "arxiv",
    "version": 1
  }
}