Pith Number

pith:MWZEBJG3

pith:2014:MWZEBJG3RRUG5UXTREXANI23AI

not attested not anchored not stored refs pending

Log del Pezzo surfaces with not small fractional indices

Kento Fujita

arxiv:1401.0988 v1 · 2014-01-06 · 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{MWZEBJG3RRUG5UXTREXANI23AI}

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	2026-05-18T03:03:11.280481Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65b240a4db8c686ed2f3892e06a35b022d2e002f16e494aef4d34fc45616da66

Aliases

arxiv: 1401.0988 · arxiv_version: 1401.0988v1 · doi: 10.48550/arxiv.1401.0988 · pith_short_12: MWZEBJG3RRUG · pith_short_16: MWZEBJG3RRUG5UXT · pith_short_8: MWZEBJG3

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/MWZEBJG3RRUG5UXTREXANI23AI \
  | 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: 65b240a4db8c686ed2f3892e06a35b022d2e002f16e494aef4d34fc45616da66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5cf710bd1723c87b815c6eaa159cf820c08de10222ac14aa80f0cef9c415f92d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-01-06T05:24:39Z",
    "title_canon_sha256": "8c138242181cb93a2fb029e78236aea17e155d21c178e66ea7bad89b30307593"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.0988",
    "kind": "arxiv",
    "version": 1
  }
}