Pith Number

pith:MCLUFRDB

pith:2007:MCLUFRDBNAMAWOBK7USLY4BBVA

not attested not anchored not stored refs pending

Parametrization of Pythagorean triples by a single triple of polynomials

Leonid Vaserstein, Sophie Frisch

arxiv:0706.0290 v2 · 2007-06-02 · math.NT · math.GM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MCLUFRDBNAMAWOBK7USLY4BBVA}

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	2026-05-18T04:19:13.470761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

609742c46168180b382afd24bc7021a83ea72b3e755c8412376de332f3ecd350

Aliases

arxiv: 0706.0290 · arxiv_version: 0706.0290v2 · doi: 10.48550/arxiv.0706.0290 · pith_short_12: MCLUFRDBNAMA · pith_short_16: MCLUFRDBNAMAWOBK · pith_short_8: MCLUFRDB

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/MCLUFRDBNAMAWOBK7USLY4BBVA \
  | 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: 609742c46168180b382afd24bc7021a83ea72b3e755c8412376de332f3ecd350

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5369130de315cb155e3c0e9ce4612e2f9d5b750285f64750cbef956a91cccfc",
    "cross_cats_sorted": [
      "math.GM"
    ],
    "license": "",
    "primary_cat": "math.NT",
    "submitted_at": "2007-06-02T23:25:52Z",
    "title_canon_sha256": "49a5089ed5a33b8eb84dc91017ba1f0c9a9607a1a9ab777391087d71d2f9fcea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0706.0290",
    "kind": "arxiv",
    "version": 2
  }
}