Pith Number

pith:QCIXZGRO

pith:2017:QCIXZGROQ7LYOMSJ6KUXKOEDQS

not attested not anchored not stored refs pending

A Short Combinatorial Proof of Derangement Identity

Dajana Stani\'c, Ivica Martinjak

arxiv:1711.04537 v1 · 2017-11-13 · 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{QCIXZGROQ7LYOMSJ6KUXKOEDQS}

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	2026-05-18T00:30:36.425030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80917c9a2e87d7873249f2a975388384911a842970a42cbb34bd623d48078ca2

Aliases

arxiv: 1711.04537 · arxiv_version: 1711.04537v1 · doi: 10.48550/arxiv.1711.04537 · pith_short_12: QCIXZGROQ7LY · pith_short_16: QCIXZGROQ7LYOMSJ · pith_short_8: QCIXZGRO

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/QCIXZGROQ7LYOMSJ6KUXKOEDQS \
  | 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: 80917c9a2e87d7873249f2a975388384911a842970a42cbb34bd623d48078ca2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "254046be3768cb72a9933e5de3e845bfc88b43ab4210464ea59a9f9fe70459fc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-11-13T11:52:35Z",
    "title_canon_sha256": "58ad82de1149ca1778f50220808378ad7e697f8e18fea1fc812af8e901fe41ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.04537",
    "kind": "arxiv",
    "version": 1
  }
}