Pith Number

pith:R7RWYOJR

pith:2014:R7RWYOJRHHYTXF3HBZWYQBRD73

not attested not anchored not stored refs pending

On $\theta$-congruent numbers, rational squares in arithmetic progressions, concordant forms and elliptic curves

Erich Selder, Karlheinz Spindler

arxiv:1408.1522 v2 · 2014-08-07 · 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{R7RWYOJRHHYTXF3HBZWYQBRD73}

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	2026-05-18T02:44:39.578639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fe36c393139f13b97670e6d880623fee5c7b7208725521ed221af7a1b075b3a

Aliases

arxiv: 1408.1522 · arxiv_version: 1408.1522v2 · doi: 10.48550/arxiv.1408.1522 · pith_short_12: R7RWYOJRHHYT · pith_short_16: R7RWYOJRHHYTXF3H · pith_short_8: R7RWYOJR

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/R7RWYOJRHHYTXF3HBZWYQBRD73 \
  | 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: 8fe36c393139f13b97670e6d880623fee5c7b7208725521ed221af7a1b075b3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e21d307918b4de8682f10b467f911c493733fd7124b98e607dce27b4e6c1ef0c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2014-08-07T09:37:45Z",
    "title_canon_sha256": "8020912d1880ddf4b05e62fce690a2964711ce60522547ebaad3147a73bd5d5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.1522",
    "kind": "arxiv",
    "version": 2
  }
}