Pith Number

pith:BNTXEG4N

pith:2026:BNTXEG4NMIDRL266HAIZVZBWXP

not attested not anchored not stored refs pending

Quantum cohomology and birational geometry of Verra fourfolds

J\'er\'emy Gu\'er\'e, Laurent Manivel, Nicolas Perrin, Vladimiro Benedetti

arxiv:2605.30450 v1 · 2026-05-28 · 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{BNTXEG4NMIDRL266HAIZVZBWXP}

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	2026-06-01T01:02:54.955692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b67721b8d620715ebde38119ae436bbcf1df6e1f24b13c8ec86582768ba0363

Aliases

arxiv: 2605.30450 · arxiv_version: 2605.30450v1 · doi: 10.48550/arxiv.2605.30450 · pith_short_12: BNTXEG4NMIDR · pith_short_16: BNTXEG4NMIDRL266 · pith_short_8: BNTXEG4N

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/BNTXEG4NMIDRL266HAIZVZBWXP \
  | 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: 0b67721b8d620715ebde38119ae436bbcf1df6e1f24b13c8ec86582768ba0363

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93404b5db5b37b33d2b8de8157f89ca744f1bcdb35e5cc46bf77bcafcad9e75a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2026-05-28T18:20:20Z",
    "title_canon_sha256": "1b84b8612fa7f6c6398b42490c972af521720d299970be75b1b66673c8c346b9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.30450",
    "kind": "arxiv",
    "version": 1
  }
}