Pith Number

pith:Z566WOTC

pith:2002:Z566WOTCTQYVR5HTRP6YIZIHG6

not attested not anchored not stored refs pending

Automorphisms of finite order on Gorenstein del Pezzo surfaces

D. -Q. Zhang

arxiv:math/0202131 v1 · 2002-02-14 · 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{Z566WOTCTQYVR5HTRP6YIZIHG6}

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	2026-05-18T01:05:29.776423Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf7deb3a629c3158f4f38bfd84650737876d2ed6f42267769bc588e1be7e7d40

Aliases

arxiv: math/0202131 · arxiv_version: math/0202131v1 · doi: 10.48550/arxiv.math/0202131 · pith_short_12: Z566WOTCTQYV · pith_short_16: Z566WOTCTQYVR5HT · pith_short_8: Z566WOTC

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/Z566WOTCTQYVR5HTRP6YIZIHG6 \
  | 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: cf7deb3a629c3158f4f38bfd84650737876d2ed6f42267769bc588e1be7e7d40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26086b754c044b86a624577125cf625771e9ee46b7d8760377f96f15cb81f93b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2002-02-14T05:27:43Z",
    "title_canon_sha256": "fba4e33ad0e680cf2b8cf8fc8abd2c7f8547124ced4f06366341bca89a27256e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0202131",
    "kind": "arxiv",
    "version": 1
  }
}