Pith Number

pith:PPIJY2UX

pith:2022:PPIJY2UX4ARLAHCA2D3RLOPV5X

not attested not anchored not stored refs pending

On the classification of non-big Ulrich vector bundles on fourfolds

Angelo Felice Lopez, Jos\'e Carlos Sierra, Roberto Mu\~noz

arxiv:2205.10143 v3 · 2022-05-20 · 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{PPIJY2UX4ARLAHCA2D3RLOPV5X}

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

Ulrich bundles on double coverings of projective space

Receipt and verification

First computed	2026-07-05T11:15:16.010275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bd09c6a97e022b01c40d0f715b9f5eddb7e7c722e2d2927f967522f2ee5abfe

Aliases

arxiv: 2205.10143 · arxiv_version: 2205.10143v3 · doi: 10.48550/arxiv.2205.10143 · pith_short_12: PPIJY2UX4ARL · pith_short_16: PPIJY2UX4ARLAHCA · pith_short_8: PPIJY2UX

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/PPIJY2UX4ARLAHCA2D3RLOPV5X \
  | 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: 7bd09c6a97e022b01c40d0f715b9f5eddb7e7c722e2d2927f967522f2ee5abfe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "146bec9289cb133599e4080a46a17bcf7baa54d022802c1a17e4827bdc23146d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-05-20T12:37:43Z",
    "title_canon_sha256": "b62f8724a0f7d4bcb20ebb418eb3af6fbc8b6ec9b3a845c9d1b6ba8f49ad9af2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.10143",
    "kind": "arxiv",
    "version": 3
  }
}