Pith Number

pith:7PUYCI3I

pith:2013:7PUYCI3IGRDWQ7WSJGZLAU3K4K

not attested not anchored not stored refs pending

Zeros of Pairs of Quadratic Forms

D.R. Heath-Brown

arxiv:1304.3894 v1 · 2013-04-14 · 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{7PUYCI3IGRDWQ7WSJGZLAU3K4K}

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	2026-05-18T03:28:03.866480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbe98123683447687ed249b2b0536ae2b254e603698d8d4ee97f2b5ba6e735fb

Aliases

arxiv: 1304.3894 · arxiv_version: 1304.3894v1 · doi: 10.48550/arxiv.1304.3894 · pith_short_12: 7PUYCI3IGRDW · pith_short_16: 7PUYCI3IGRDWQ7WS · pith_short_8: 7PUYCI3I

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/7PUYCI3IGRDWQ7WSJGZLAU3K4K \
  | 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: fbe98123683447687ed249b2b0536ae2b254e603698d8d4ee97f2b5ba6e735fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00ec6131d081c8beb30a39c0dea62e53770f1a77849b95fb9dfcc4de7f1f0529",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2013-04-14T09:35:37Z",
    "title_canon_sha256": "a676e2cf13e1396d985bb879b5d74b008d44a2f1c12e213dd1143dcedf7d61f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3894",
    "kind": "arxiv",
    "version": 1
  }
}