Pith Number

pith:HQAGD3NY

pith:2012:HQAGD3NYPARHWEKLWZWIYL3FU7

not attested not anchored not stored refs pending

The Diophantine Equation arctan(1/x)+arctan(m/y)= arctan(1/k)

Konstantine Zelator

arxiv:1203.6380 v1 · 2012-03-28 · 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{HQAGD3NYPARHWEKLWZWIYL3FU7}

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	2026-05-18T03:59:02.668401Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c0061edb878227b114bb66c8c2f65a7d60a1f13a04d920ababfa1e491b073f2

Aliases

arxiv: 1203.6380 · arxiv_version: 1203.6380v1 · doi: 10.48550/arxiv.1203.6380 · pith_short_12: HQAGD3NYPARH · pith_short_16: HQAGD3NYPARHWEKL · pith_short_8: HQAGD3NY

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/HQAGD3NYPARHWEKLWZWIYL3FU7 \
  | 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: 3c0061edb878227b114bb66c8c2f65a7d60a1f13a04d920ababfa1e491b073f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7c9c766fc66c38ff0e5cd0a15aa86de04a52ff1297756cd42efc2dbdf07167c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2012-03-28T21:13:22Z",
    "title_canon_sha256": "4456ea49a64a5769aa949291cbbd7d0a825823cb39245f44b486ab5a8c433c1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6380",
    "kind": "arxiv",
    "version": 1
  }
}