Pith Number

pith:E2XSA2RY

pith:2025:E2XSA2RYRWOBZW52WIXJCOCKK2

not attested not anchored not stored refs pending

Fundamental groups of compact K\"ahler manifolds with semi-positive holomorphic sectional curvature

Shin-ichi Matsumura

arxiv:2502.00367 v1 · 2025-02-01 · 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{E2XSA2RYRWOBZW52WIXJCOCKK2}

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

2 papers in Pith

Positive holomorphic sectional curvature on rational surfaces

Uniform weak RC-positivity and rational connectedness

Receipt and verification

First computed	2026-07-05T10:08:32.754786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26af206a388d9c1cdbbab22e91384a56a107db41b6d074286eebc8e1b2aa9b29

Aliases

arxiv: 2502.00367 · arxiv_version: 2502.00367v1 · doi: 10.48550/arxiv.2502.00367 · pith_short_12: E2XSA2RYRWOB · pith_short_16: E2XSA2RYRWOBZW52 · pith_short_8: E2XSA2RY

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/E2XSA2RYRWOBZW52WIXJCOCKK2 \
  | 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: 26af206a388d9c1cdbbab22e91384a56a107db41b6d074286eebc8e1b2aa9b29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68922e0ef3bd02a3ba9af72217a682dec467cbb346a341d8edb9a3081c5b449a",
    "cross_cats_sorted": [
      "math.AG",
      "math.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2025-02-01T08:42:44Z",
    "title_canon_sha256": "52b25eb3e1dd25218c880c84274e78cfae0d9f388e07186b18f58d60f8a918cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.00367",
    "kind": "arxiv",
    "version": 1
  }
}