Pith Number

pith:4WY4COSI

pith:2019:4WY4COSILIYKPAC36F6I5JNTTN

not attested not anchored not stored refs pending

On K-polystability for log del Pezzo pairs of Maeda type

Kento Fujita

arxiv:1907.04997 v1 · 2019-07-11 · 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{4WY4COSILIYKPAC36F6I5JNTTN}

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	2026-05-17T23:40:54.249900Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5b1c13a485a30a7805bf17c8ea5b39b4e4b1e298278baf805ba44cb0a9d6783

Aliases

arxiv: 1907.04997 · arxiv_version: 1907.04997v1 · doi: 10.48550/arxiv.1907.04997 · pith_short_12: 4WY4COSILIYK · pith_short_16: 4WY4COSILIYKPAC3 · pith_short_8: 4WY4COSI

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/4WY4COSILIYKPAC36F6I5JNTTN \
  | 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: e5b1c13a485a30a7805bf17c8ea5b39b4e4b1e298278baf805ba44cb0a9d6783

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f32028c7a213c8b5840b7c1e4bef02c31d37c240f9f7282e8e72e47f39bfa02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-11T05:06:06Z",
    "title_canon_sha256": "54edc474f082b60ad4007e78d57f1b1690df87e00959c73f0a2cbf1301b10ac5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04997",
    "kind": "arxiv",
    "version": 1
  }
}