Pith Number

pith:JKU2DN2K

pith:2018:JKU2DN2KUDLRIKFITSRQDX7K7B

not attested not anchored not stored refs pending

Extremal and stationary discs for the Kobayashi $k$-metric

Florian Bertrand, Giuseppe Della Sala, Jae-Cheon Joo

arxiv:1801.09965 v1 · 2018-01-30 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JKU2DN2KUDLRIKFITSRQDX7K7B}

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	2026-05-18T00:24:46.262865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4aa9a1b74aa0d71428a89ca301dfeaf84b0d44fd03b69e039406f42b327df196

Aliases

arxiv: 1801.09965 · arxiv_version: 1801.09965v1 · doi: 10.48550/arxiv.1801.09965 · pith_short_12: JKU2DN2KUDLR · pith_short_16: JKU2DN2KUDLRIKFI · pith_short_8: JKU2DN2K

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/JKU2DN2KUDLRIKFITSRQDX7K7B \
  | 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: 4aa9a1b74aa0d71428a89ca301dfeaf84b0d44fd03b69e039406f42b327df196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c5a7b0c9254740d7f0e1694869261e22cdc8a64698b9f4284d8663ad3435299e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2018-01-30T12:47:13Z",
    "title_canon_sha256": "6e327852c223a2c34ba62caee1e5ca5ca4f7b06c428b77e0e4cc437d1565bc7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09965",
    "kind": "arxiv",
    "version": 1
  }
}