Pith Number

pith:EWBXX7CZ

pith:2017:EWBXX7CZEACXSZWMVDH2KO2RFG

not attested not anchored not stored refs pending

A variation on the theme of Nicomachus

Florian Luca, Gerem\'ias Polanco, Wadim Zudilin

arxiv:1707.09477 v1 · 2017-07-29 · math.NT · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EWBXX7CZEACXSZWMVDH2KO2RFG}

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	2026-05-18T00:14:48.249879Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25837bfc5920057966cca8cfa53b5129a2711d90af5090b14f34bbd64b68b038

Aliases

arxiv: 1707.09477 · arxiv_version: 1707.09477v1 · doi: 10.48550/arxiv.1707.09477 · pith_short_12: EWBXX7CZEACX · pith_short_16: EWBXX7CZEACXSZWM · pith_short_8: EWBXX7CZ

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/EWBXX7CZEACXSZWMVDH2KO2RFG \
  | 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: 25837bfc5920057966cca8cfa53b5129a2711d90af5090b14f34bbd64b68b038

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa28ecd1b8cc677d83d03bedcba8d9ccb3cb822aab162f9443b8304ef53f59cc",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-07-29T07:22:52Z",
    "title_canon_sha256": "0b7cb633a3957fd8d9e7ea13c1576e8fd57669855848403ffa05865d988b5aa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.09477",
    "kind": "arxiv",
    "version": 1
  }
}