Pith Number

pith:JIFCTUP3

pith:2019:JIFCTUP3WQYBUR6YVWOXEK5F64

not attested not anchored not stored refs pending

On the perimeter length determination of the eight-centered oval

Jean-Claude Golvin, Jean-Marc Ginoux (LIS)

arxiv:1908.00783 v1 · 2019-08-02 · math.MG · 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{JIFCTUP3WQYBUR6YVWOXEK5F64}

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	2026-07-04T23:51:09.365849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a0a29d1fbb4301a47d8ad9d722ba5f701c94acc4f0edf84a6e1a1de9293ecb5

Aliases

arxiv: 1908.00783 · arxiv_version: 1908.00783v1 · doi: 10.48550/arxiv.1908.00783 · pith_short_12: JIFCTUP3WQYB · pith_short_16: JIFCTUP3WQYBUR6Y · pith_short_8: JIFCTUP3

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/JIFCTUP3WQYBUR6YVWOXEK5F64 \
  | 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: 4a0a29d1fbb4301a47d8ad9d722ba5f701c94acc4f0edf84a6e1a1de9293ecb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ccb649b89851df511ed1bf98cf0fa4fc042b2f186162728868e4c503ac2af5c",
    "cross_cats_sorted": [
      "math.HO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2019-08-02T10:01:56Z",
    "title_canon_sha256": "b5dbbe9fc26f2ac974df985d4818c7680b7a28b75cba91bc55c0baf0173683ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00783",
    "kind": "arxiv",
    "version": 1
  }
}