Pith Number

pith:JZNIPJPS

pith:2022:JZNIPJPS575RAJUAT36XYIUMKV

not attested not anchored not stored refs pending

Del Pezzo surfaces of Picard number one admitting a torus action

Beatrice Hafner, Daniel Haettig, Juergen Hausen, Justus Springer

arxiv:2207.14790 v2 · 2022-07-29 · 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{JZNIPJPS575RAJUAT36XYIUMKV}

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

1 paper in Pith

K*-surfaces of Picard number one and integral degree

Receipt and verification

First computed	2026-07-05T10:55:15.434058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e5a87a5f2effb1026809efd7c228c5576853ac90dac77a839d9c933175f2bd1

Aliases

arxiv: 2207.14790 · arxiv_version: 2207.14790v2 · doi: 10.48550/arxiv.2207.14790 · pith_short_12: JZNIPJPS575R · pith_short_16: JZNIPJPS575RAJUA · pith_short_8: JZNIPJPS

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/JZNIPJPS575RAJUAT36XYIUMKV \
  | 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: 4e5a87a5f2effb1026809efd7c228c5576853ac90dac77a839d9c933175f2bd1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ec69a39d0568df547a62da70eb18a5565a151841e5b2cd0631d3e3d2bea56a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-07-29T17:14:58Z",
    "title_canon_sha256": "a1fb870f1b886e77b55ca9082f070eb9d21869875cf56d1b471f12afdb7b4a41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.14790",
    "kind": "arxiv",
    "version": 2
  }
}