Pith Number

pith:DNZZGLTJ

pith:2011:DNZZGLTJNUEPRZEQOPVBNSAGEI

not attested not anchored not stored refs pending

Some remarks on the Kaehler geometry of LeBrun's Ricci flat metrics on C^2

Andrea Loi, Fabio Zuddas, Michela Zedda

arxiv:1103.6158 v1 · 2011-03-31 · 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{DNZZGLTJNUEPRZEQOPVBNSAGEI}

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	2026-05-18T04:25:13.881702Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b73932e696d08f8e49073ea16c806222054592310ac3e5f645f9796b09d34cb

Aliases

arxiv: 1103.6158 · arxiv_version: 1103.6158v1 · doi: 10.48550/arxiv.1103.6158 · pith_short_12: DNZZGLTJNUEP · pith_short_16: DNZZGLTJNUEPRZEQ · pith_short_8: DNZZGLTJ

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/DNZZGLTJNUEPRZEQOPVBNSAGEI \
  | 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: 1b73932e696d08f8e49073ea16c806222054592310ac3e5f645f9796b09d34cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01dfe68b8a53dc580bbdabac4d0c55a5c9f351c7853a56b54648d38d0500e969",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-03-31T12:42:06Z",
    "title_canon_sha256": "f9d59d9000f583b553a1904ed64875c8ca16bfecb20feec9199ca38335f6006a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.6158",
    "kind": "arxiv",
    "version": 1
  }
}