Pith Number

pith:D23KGBTF

pith:2019:D23KGBTFTPGVW3CHVYROQRUPPX

not attested not anchored not stored refs pending

Einstein four-manifolds with self-dual Weyl curvature of nonnegative determinant

Peng Wu

arxiv:1903.11818 v2 · 2019-03-28 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D23KGBTFTPGVW3CHVYROQRUPPX}

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.

Cited by

1 paper in Pith

Einstein Manifolds, Self-Dual Weyl Curvature, and Conformally Kaehler Geometry

Receipt and verification

First computed	2026-07-05T00:11:03.692960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1eb6a306659bcd5b6c47ae22e8468f7dc04af76306ad2a9c7eb3e58740e891be

Aliases

arxiv: 1903.11818 · arxiv_version: 1903.11818v2 · doi: 10.48550/arxiv.1903.11818 · pith_short_12: D23KGBTFTPGV · pith_short_16: D23KGBTFTPGVW3CH · pith_short_8: D23KGBTF

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/D23KGBTFTPGVW3CHVYROQRUPPX \
  | 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: 1eb6a306659bcd5b6c47ae22e8468f7dc04af76306ad2a9c7eb3e58740e891be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8116454f57c5835a55ebac0bfaf5ea7f1eb5c949e60bbb2b150e4fd430dab21f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-03-28T07:50:16Z",
    "title_canon_sha256": "133664c7936d1e3ddd7d8afddd31f9c2fd5302213b406854b3ab525ed38b7ecd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11818",
    "kind": "arxiv",
    "version": 2
  }
}