Pith Number

pith:IY4QYJPP

pith:2016:IY4QYJPPCMHU5FJHXWKFEV4ZCU

not attested not anchored not stored refs pending

Alpha invariant for general polarization of del Pezzo surfaces of degree 1

Joonyeong Won, Kyusik Hong

arxiv:1606.01418 v1 · 2016-06-04 · 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{IY4QYJPPCMHU5FJHXWKFEV4ZCU}

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	2026-05-18T01:12:54.244855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

46390c25ef130f4e9527bd945257991510460a47c9ab29d4abcd2d71892f2bdb

Aliases

arxiv: 1606.01418 · arxiv_version: 1606.01418v1 · doi: 10.48550/arxiv.1606.01418 · pith_short_12: IY4QYJPPCMHU · pith_short_16: IY4QYJPPCMHU5FJH · pith_short_8: IY4QYJPP

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/IY4QYJPPCMHU5FJHXWKFEV4ZCU \
  | 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: 46390c25ef130f4e9527bd945257991510460a47c9ab29d4abcd2d71892f2bdb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0162c8f26c25a70de8cb7c28452f1ce5732c4057e78d5ff5e1f5764acd44b8cb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-06-04T21:58:53Z",
    "title_canon_sha256": "c4dbd1ebc31918a3482cfead5bd60821272fffc9cb62cc80cf07fbe435687593"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.01418",
    "kind": "arxiv",
    "version": 1
  }
}