Pith Number

pith:VN34RYDR

pith:2025:VN34RYDRGTPC2NCFQ7EKDF3DQP

not attested not anchored not stored refs pending

A Supplement to the anticanonical Volumes of weak $\mathbb{Q}$-Fano threefolds of Picard rank two

Ching-Jui Lai, Tsung-Ju Lee

arxiv:2502.19419 v1 · 2025-01-23 · 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{VN34RYDRGTPC2NCFQ7EKDF3DQP}

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

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Receipt and verification

First computed	2026-07-05T10:20:45.906390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab77c8e07134de2d344587c8a1976383c0f307d861586933b7d22173f5675b9e

Aliases

arxiv: 2502.19419 · arxiv_version: 2502.19419v1 · doi: 10.48550/arxiv.2502.19419 · pith_short_12: VN34RYDRGTPC · pith_short_16: VN34RYDRGTPC2NCF · pith_short_8: VN34RYDR

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/VN34RYDRGTPC2NCFQ7EKDF3DQP \
  | 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: ab77c8e07134de2d344587c8a1976383c0f307d861586933b7d22173f5675b9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "919ea6581e928bf29ed5332fdc0f7b53b68f11780d5db0bfb0d4fe81ab6f272d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-01-23T09:18:56Z",
    "title_canon_sha256": "248a61a40fec0370b7efe874600e1bb1aa42a422845231d44d41b8ebb7b7d67c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.19419",
    "kind": "arxiv",
    "version": 1
  }
}