Pith Number

pith:QZG65VCI

pith:2017:QZG65VCI7OZ2P6VNJNKEWQJLNT

not attested not anchored not stored refs pending

A characterization of Fibonacci numbers

Giuseppe Pirillo

arxiv:1707.04944 v1 · 2017-07-16 · math.CO · math.HO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QZG65VCI7OZ2P6VNJNKEWQJLNT}

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	2026-05-18T00:40:11.738081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

864deed448fbb3a7faad4b544b412b6cea4366c0a9f59f6b19dc562d8e589c41

Aliases

arxiv: 1707.04944 · arxiv_version: 1707.04944v1 · doi: 10.48550/arxiv.1707.04944 · pith_short_12: QZG65VCI7OZ2 · pith_short_16: QZG65VCI7OZ2P6VN · pith_short_8: QZG65VCI

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/QZG65VCI7OZ2P6VNJNKEWQJLNT \
  | 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: 864deed448fbb3a7faad4b544b412b6cea4366c0a9f59f6b19dc562d8e589c41

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "845f37aed3589822f93a161b51a923a8321642e52024a49c17edf9f2d11f752a",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-07-16T20:53:54Z",
    "title_canon_sha256": "2a659c651a4056050abf98fd93823d5e1a1aa49a6899c58b6b4c5d67af3b41cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.04944",
    "kind": "arxiv",
    "version": 1
  }
}