Pith Number

pith:TK5DEYHE

pith:2016:TK5DEYHESSGBAYI7LY6LNE4WZY

not attested not anchored not stored refs pending

A simple identity for derivatives of the arctangent function

B. M. Quine, S. M. Abrarov

arxiv:1605.02843 v1 · 2016-05-10 · 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{TK5DEYHESSGBAYI7LY6LNE4WZY}

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	2026-05-18T01:15:08.461621Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aba3260e4948c10611f5e3cb69396ce30893f7f8746b454b648db065a8311a5

Aliases

arxiv: 1605.02843 · arxiv_version: 1605.02843v1 · doi: 10.48550/arxiv.1605.02843 · pith_short_12: TK5DEYHESSGB · pith_short_16: TK5DEYHESSGBAYI7 · pith_short_8: TK5DEYHE

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/TK5DEYHESSGBAYI7LY6LNE4WZY \
  | 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: 9aba3260e4948c10611f5e3cb69396ce30893f7f8746b454b648db065a8311a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fcc03de671e74bdbb038f238f05d8a3f34d0975628f9ca3c61ba3374ee84ba4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GM",
    "submitted_at": "2016-05-10T04:20:24Z",
    "title_canon_sha256": "21dc04f2856d4b6983e4ffcfa3552061fc90b83aeae3fe6c2bd50c61d5e1f41d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02843",
    "kind": "arxiv",
    "version": 1
  }
}