Pith Number

pith:YDUABK6L

pith:2015:YDUABK6LQWHXETQAW63FBBEYPA

not attested not anchored not stored refs pending

Parametric solutions of Pell equations

Leonardo Zapponi

arxiv:1503.00637 v1 · 2015-03-02 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YDUABK6LQWHXETQAW63FBBEYPA}

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	2026-05-18T02:25:49.619394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0e800abcb858f724e00b7b6508498783f80b77acd70de537582852b29fd73a4

Aliases

arxiv: 1503.00637 · arxiv_version: 1503.00637v1 · doi: 10.48550/arxiv.1503.00637 · pith_short_12: YDUABK6LQWHX · pith_short_16: YDUABK6LQWHXETQA · pith_short_8: YDUABK6L

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/YDUABK6LQWHXETQAW63FBBEYPA \
  | 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: c0e800abcb858f724e00b7b6508498783f80b77acd70de537582852b29fd73a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a89ce57ba26223cd3077c6ef591d7aaf696f3e59c6f1d11813f2dfe21d71288",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2015-03-02T17:46:07Z",
    "title_canon_sha256": "ccac1ee2cc0d1fe2e7156b71fb74f8676580fbbe3e6cbf9c540cda80c837d548"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00637",
    "kind": "arxiv",
    "version": 1
  }
}