Pith Number

pith:7IF63VYJ

pith:2022:7IF63VYJKIV2HWQPWKGQJEJDIV

not attested not anchored not stored refs pending

Cubic Fourfolds with an Involution

Lisa Marquand

arxiv:2202.13213 v1 · 2022-02-26 · 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{7IF63VYJKIV2HWQPWKGQJEJDIV}

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

2 papers in Pith

Kuznetsov components and transcendental motives of cubic fourfolds

Kuznetsov components ans transcendental motives of cubic fourfolds

Receipt and verification

First computed	2026-07-05T04:00:27.154178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa0bedd709522ba3da0fb28d04912345543123c02da8abbd733111e67e977107

Aliases

arxiv: 2202.13213 · arxiv_version: 2202.13213v1 · doi: 10.48550/arxiv.2202.13213 · pith_short_12: 7IF63VYJKIV2 · pith_short_16: 7IF63VYJKIV2HWQP · pith_short_8: 7IF63VYJ

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/7IF63VYJKIV2HWQPWKGQJEJDIV \
  | 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: fa0bedd709522ba3da0fb28d04912345543123c02da8abbd733111e67e977107

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c76a20846f3b66bc7692ebb4268e8b47c0b26ffa921a16f40d2048250c1e895b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-02-26T19:33:13Z",
    "title_canon_sha256": "1621f04d585d0153ad59a8bf352bd691f6ba7d0521246ff75b1fd818ac67c141"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.13213",
    "kind": "arxiv",
    "version": 1
  }
}