Pith Number

pith:L24NPJGQ

pith:2026:L24NPJGQXKCD7VX32W4WUZCSQL

not attested not anchored not stored refs pending

Semipositivity of the orbifold second Chern class in Fujiki's class

Masataka Iwai, Satoshi Jinnouchi, Shiyu Zhang

arxiv:2607.18699 v1 · 2026-07-21 · math.AG · math.CV · 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{L24NPJGQXKCD7VX32W4WUZCSQL}

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	2026-07-22T01:23:07.312743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5eb8d7a4d0ba843fd6fbd5b96a645282fa7882c247ae69cdbc2758d34f3d378d

Aliases

arxiv: 2607.18699 · arxiv_version: 2607.18699v1 · doi: 10.48550/arxiv.2607.18699 · pith_short_12: L24NPJGQXKCD · pith_short_16: L24NPJGQXKCD7VX3 · pith_short_8: L24NPJGQ

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/L24NPJGQXKCD7VX32W4WUZCSQL \
  | 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: 5eb8d7a4d0ba843fd6fbd5b96a645282fa7882c247ae69cdbc2758d34f3d378d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06eb7df52ff7a891d9e5408e8e6a8de61691a08ea708fa8cf558960ad9647e59",
    "cross_cats_sorted": [
      "math.CV",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-07-21T04:35:41Z",
    "title_canon_sha256": "c37ebb66453a89175c46f956b1292f3cea69f135c29827eabf02c4cb5c67d308"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.18699",
    "kind": "arxiv",
    "version": 1
  }
}