Pith Number

pith:NL3QSAEH

pith:2025:NL3QSAEHTXG4LMTO5D4KED7XCA

not attested not anchored not stored refs pending

Equivariant unirationality of Fano threefolds

Ivan Cheltsov, Yuri Tschinkel, Zhijia Zhang

arxiv:2502.19598 v1 · 2025-02-26 · 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{NL3QSAEHTXG4LMTO5D4KED7XCA}

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

Amitsur groups of primitive Fano threefolds

Receipt and verification

First computed	2026-07-05T10:20:49.591647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6af70900879dcdc5b26ee8f8a20ff71016757a6f2df39730b3eeba2fe612d349

Aliases

arxiv: 2502.19598 · arxiv_version: 2502.19598v1 · doi: 10.48550/arxiv.2502.19598 · pith_short_12: NL3QSAEHTXG4 · pith_short_16: NL3QSAEHTXG4LMTO · pith_short_8: NL3QSAEH

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/NL3QSAEHTXG4LMTO5D4KED7XCA \
  | 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: 6af70900879dcdc5b26ee8f8a20ff71016757a6f2df39730b3eeba2fe612d349

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a2e2b92903bbf39022788d183df77157f3bc30f652c2d9d7d14e24ddaae2819",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-02-26T22:23:00Z",
    "title_canon_sha256": "0ba0fc3f21c699e78ec089ec9cf4a2f4afa3b0763723cfcafb3f17381e9100b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.19598",
    "kind": "arxiv",
    "version": 1
  }
}