Pith Number

pith:EBKSBSKM

pith:2021:EBKSBSKMW7IEBESXBMIJMQQQ5X

not attested not anchored not stored refs pending

A faster algorithm for Cops and Robbers

Jan Petr, Julien Portier, Leo Versteegen

arxiv:2112.07449 v2 · 2021-12-14 · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EBKSBSKMW7IEBESXBMIJMQQQ5X}

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	2026-07-05T04:31:58.373147Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

205520c94cb7d04092570b10964210edebe1dbb52ec958ff01fa4399a3ee70e0

Aliases

arxiv: 2112.07449 · arxiv_version: 2112.07449v2 · doi: 10.48550/arxiv.2112.07449 · pith_short_12: EBKSBSKMW7IE · pith_short_16: EBKSBSKMW7IEBESX · pith_short_8: EBKSBSKM

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/EBKSBSKMW7IEBESXBMIJMQQQ5X \
  | 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: 205520c94cb7d04092570b10964210edebe1dbb52ec958ff01fa4399a3ee70e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1c8feb4e1c5cbc1025e5a2f6ed099a059df090dd28adef89f30bdefac3f1f83",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-12-14T15:07:08Z",
    "title_canon_sha256": "313c949689b0286331ac911f725704b994eca46f23aca4e67d3d429e982d5355"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.07449",
    "kind": "arxiv",
    "version": 2
  }
}