Pith Number

pith:WRZZPBOF

pith:2025:WRZZPBOFTWHJXEK6TTFL2ELF26

not attested not anchored not stored refs pending

Spinor modifications of conic bundles and derived categories of 1-nodal Fano threefolds

Alexander Kuznetsov

arxiv:2502.02082 v2 · 2025-02-04 · 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{WRZZPBOFTWHJXEK6TTFL2ELF26}

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	2026-07-05T10:50:47.008058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4739785c59d8e9b915e9ccabd1165d7860a012d2dd09b72e651e31de03b1883

Aliases

arxiv: 2502.02082 · arxiv_version: 2502.02082v2 · doi: 10.48550/arxiv.2502.02082 · pith_short_12: WRZZPBOFTWHJ · pith_short_16: WRZZPBOFTWHJXEK6 · pith_short_8: WRZZPBOF

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/WRZZPBOFTWHJXEK6TTFL2ELF26 \
  | 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: b4739785c59d8e9b915e9ccabd1165d7860a012d2dd09b72e651e31de03b1883

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1121e275d2712091bce4d871e5c8a793f3f8b3fbb7f3ce63d992cfd1e84f4654",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-02-04T08:04:22Z",
    "title_canon_sha256": "479fb233402cc3fa915629344fbce1531b4b40f0e3a916b5626fe8e5adc994cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.02082",
    "kind": "arxiv",
    "version": 2
  }
}