Pith Number

pith:N52C4B3T

pith:2018:N52C4B3TP7Y3GBQWTC2EILD2TX

not attested not anchored not stored refs pending

On morphisms of compact K\"ahler manifolds with semi-positive holomorphic sectional curvature

Shin-ichi Matsumura

arxiv:1809.08859 v1 · 2018-09-24 · math.DG · math.AG · 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{N52C4B3TP7Y3GBQWTC2EILD2TX}

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	2026-05-18T00:05:03.351936Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f742e07737ff1b3061698b4442c7a9df796157325111dfdcc149464e08f6e70

Aliases

arxiv: 1809.08859 · arxiv_version: 1809.08859v1 · doi: 10.48550/arxiv.1809.08859 · pith_short_12: N52C4B3TP7Y3 · pith_short_16: N52C4B3TP7Y3GBQW · pith_short_8: N52C4B3T

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/N52C4B3TP7Y3GBQWTC2EILD2TX \
  | 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: 6f742e07737ff1b3061698b4442c7a9df796157325111dfdcc149464e08f6e70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7e7df7f5289d48977376ee24f85a97fbe022c3383962d7d98749234da4b1090",
    "cross_cats_sorted": [
      "math.AG",
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2018-09-24T11:55:04Z",
    "title_canon_sha256": "5202e19d74979122fe41fc14dad4e6ae62e016914001452e0dc0d32539afae45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.08859",
    "kind": "arxiv",
    "version": 1
  }
}