Pith Number

pith:T7K3AZB2

pith:2013:T7K3AZB24NP64V4JBBFSHYI4FK

not attested not anchored not stored refs pending

Methodus inveniendi lineas curvas maximi minimive proprietate gaudentes, sive solutio problematis isoperimetrici lattissimo sensu accepti

Leonhard Euler

arxiv:1307.7187 v2 · 2013-07-26 · math.HO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T7K3AZB24NP64V4JBBFSHYI4FK}

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	2026-05-18T03:06:04.753575Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fd5b0643ae35fee5789084b23e11c2ab4af4d4fd462b3e4b4c574bc93bee025

Aliases

arxiv: 1307.7187 · arxiv_version: 1307.7187v2 · doi: 10.48550/arxiv.1307.7187 · pith_short_12: T7K3AZB24NP6 · pith_short_16: T7K3AZB24NP64V4J · pith_short_8: T7K3AZB2

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/T7K3AZB24NP64V4JBBFSHYI4FK \
  | 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: 9fd5b0643ae35fee5789084b23e11c2ab4af4d4fd462b3e4b4c574bc93bee025

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bb6e7289f0085fe73bd1c5a610094da56d47c9115603a4406ecdc78205b003f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.HO",
    "submitted_at": "2013-07-26T22:45:18Z",
    "title_canon_sha256": "357bd10c477a8a12a753bf49b410cf4fd6f47776d3dffad7fbd049e851e4481f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7187",
    "kind": "arxiv",
    "version": 2
  }
}