Pith Number

pith:EQS5T2SB

pith:2016:EQS5T2SBWAJLFIKW7QGOHKUCF7

not attested not anchored not stored refs pending

Congruent numbers on the right trapezoid

Tianxin Cai, Yong Zhang

arxiv:1605.06774 v1 · 2016-05-22 · 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{EQS5T2SBWAJLFIKW7QGOHKUCF7}

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	2026-05-18T01:14:11.284610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2425d9ea41b012b2a156fc0ce3aa822ff19b97b14c74fc4432f7cb34a8ab0913

Aliases

arxiv: 1605.06774 · arxiv_version: 1605.06774v1 · doi: 10.48550/arxiv.1605.06774 · pith_short_12: EQS5T2SBWAJL · pith_short_16: EQS5T2SBWAJLFIKW · pith_short_8: EQS5T2SB

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/EQS5T2SBWAJLFIKW7QGOHKUCF7 \
  | 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: 2425d9ea41b012b2a156fc0ce3aa822ff19b97b14c74fc4432f7cb34a8ab0913

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8f3db929be3c387dc862402d95d97fc45b9e9b7a3262c9e36423d7285d4f2b8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2016-05-22T11:38:58Z",
    "title_canon_sha256": "9220c8f4aa03227b97eb145b5dd6196a962873f82f771f339e558e033bb60531"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.06774",
    "kind": "arxiv",
    "version": 1
  }
}