Pith Number

pith:ONHX67D6

pith:2016:ONHX67D646DFBFARRG7Q77LA3T

not attested not anchored not stored refs pending

Cubic fourfolds fibered in sextic del Pezzo surfaces

Anthony V\'arilly-Alvarado, Brendan Hassett, Nicolas Addington, Yuri Tschinkel

arxiv:1606.05321 v4 · 2016-06-16 · 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{ONHX67D646DFBFARRG7Q77LA3T}

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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

A remark on algebraic cycles on cubic fourfolds

Receipt and verification

First computed	2026-07-05T01:59:52.592663Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

734f7f7c7ee78650941189bf0ffd60dcdbca0ad7abd868dc3989bb3729e8873a

Aliases

arxiv: 1606.05321 · arxiv_version: 1606.05321v4 · doi: 10.48550/arxiv.1606.05321 · pith_short_12: ONHX67D646DF · pith_short_16: ONHX67D646DFBFAR · pith_short_8: ONHX67D6

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/ONHX67D646DFBFARRG7Q77LA3T \
  | 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: 734f7f7c7ee78650941189bf0ffd60dcdbca0ad7abd868dc3989bb3729e8873a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8af28d7411e8ce19aa4a705fcb1c2380c1d5f96c9de7bcf15c6cfe3e64381ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-06-16T19:19:07Z",
    "title_canon_sha256": "f0db10cdc9c81743a3c059afb1e1a4bb92995275592aaf3576f16f58e4d12780"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1606.05321",
    "kind": "arxiv",
    "version": 4
  }
}