Pith Number

pith:I53OP7MS

pith:2016:I53OP7MSJW6QMS3QUPEH67QWOT

not attested not anchored not stored refs pending

A family of compact strictly pseudoconvex hypersurfaces in $\mathbb C^2$ without umbilical points

Dmitri Zaitsev, Duong Ngoc Son, Peter Ebenfelt

arxiv:1609.02415 v1 · 2016-09-08 · 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{I53OP7MSJW6QMS3QUPEH67QWOT}

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	2026-05-18T00:08:23.967039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4776e7fd924dbd064b70a3c87f7e1674d8a53cf16ae735f8c775226f32a6cb86

Aliases

arxiv: 1609.02415 · arxiv_version: 1609.02415v1 · doi: 10.48550/arxiv.1609.02415 · pith_short_12: I53OP7MSJW6Q · pith_short_16: I53OP7MSJW6QMS3Q · pith_short_8: I53OP7MS

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/I53OP7MSJW6QMS3QUPEH67QWOT \
  | 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: 4776e7fd924dbd064b70a3c87f7e1674d8a53cf16ae735f8c775226f32a6cb86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cbe097ccd390c8d5b935851acdcc96d77f0aff657877cf3744206bfec99a429",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2016-09-08T13:24:15Z",
    "title_canon_sha256": "494823696e0c1c3346ad0ab013bfec0d240e7deee9f0fedb5473054f4d472fea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.02415",
    "kind": "arxiv",
    "version": 1
  }
}