Pith Number

pith:HBCRCEUD

pith:2025:HBCRCEUD2EY4UDKJU47ENCG7OP

not attested not anchored not stored refs pending

Higher-rank instantons sheaves on Fano threefolds

Daniele Faenzi (UBE), Gaia Comaschi (UPPA)

arxiv:2504.13505 v2 · 2025-04-18 · 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{HBCRCEUD2EY4UDKJU47ENCG7OP}

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	2026-06-19T16:11:10.585721Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3845111283d131ca0d49a73e4688df73fe5f6d18f7f723090b6d4464165ed93e

Aliases

arxiv: 2504.13505 · arxiv_version: 2504.13505v2 · doi: 10.48550/arxiv.2504.13505 · pith_short_12: HBCRCEUD2EY4 · pith_short_16: HBCRCEUD2EY4UDKJ · pith_short_8: HBCRCEUD

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/HBCRCEUD2EY4UDKJU47ENCG7OP \
  | 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: 3845111283d131ca0d49a73e4688df73fe5f6d18f7f723090b6d4464165ed93e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a7d56af2cb38542a9f4f693cb645c2c5b8a6ff9b22d54392e182979ed8d15d1d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2025-04-18T06:49:42Z",
    "title_canon_sha256": "280e081b1a479ecff8422e152f4aedbcaa9ac032cb4fb17074c3cc7d2f78766b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.13505",
    "kind": "arxiv",
    "version": 2
  }
}