Pith Number

pith:NYTQWYDC

pith:2011:NYTQWYDCJWUJ7M4TGWEJGLUV6R

not attested not anchored not stored refs pending

Classification of Moishezon twistor spaces on 4CP^2

Nobuhiro Honda

arxiv:1108.1443 v1 · 2011-08-06 · math.DG · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NYTQWYDCJWUJ7M4TGWEJGLUV6R}

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	2026-05-18T04:16:01.049410Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e270b60624da89fb3933588932e95f455b2d40066f7a5701956d31203e90076

Aliases

arxiv: 1108.1443 · arxiv_version: 1108.1443v1 · doi: 10.48550/arxiv.1108.1443 · pith_short_12: NYTQWYDCJWUJ · pith_short_16: NYTQWYDCJWUJ7M4T · pith_short_8: NYTQWYDC

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/NYTQWYDCJWUJ7M4TGWEJGLUV6R \
  | 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: 6e270b60624da89fb3933588932e95f455b2d40066f7a5701956d31203e90076

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5da570ef4e097b7a0a4fdb3867b135779fedc558ff2b0c6f01eae3814c6d115b",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-08-06T03:28:37Z",
    "title_canon_sha256": "307645be76898842f1e7dcaf73226a8cf1dd12ce592c99f4ed2193eab280ebdc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.1443",
    "kind": "arxiv",
    "version": 1
  }
}