Pith Number

pith:TV5MZHGR

pith:2014:TV5MZHGRXXVAAW5GDU6LN7AGAR

not attested not anchored not stored refs pending

The Fano variety of lines and rationality problem for a cubic hypersurface

Evgeny Shinder, Sergey Galkin

arxiv:1405.5154 v2 · 2014-05-20 · 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{TV5MZHGRXXVAAW5GDU6LN7AGAR}

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

Zeta functions of K3 categories over finite fields

Receipt and verification

First computed	2026-05-18T02:48:56.181145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d7acc9cd1bdea005ba61d3cb6fc06046bdd632a938fd3566123d2a7ccb65851

Aliases

arxiv: 1405.5154 · arxiv_version: 1405.5154v2 · doi: 10.48550/arxiv.1405.5154 · pith_short_12: TV5MZHGRXXVA · pith_short_16: TV5MZHGRXXVAAW5G · pith_short_8: TV5MZHGR

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/TV5MZHGRXXVAAW5GDU6LN7AGAR \
  | 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: 9d7acc9cd1bdea005ba61d3cb6fc06046bdd632a938fd3566123d2a7ccb65851

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f4d3b38dcf6f61c16d80cf4957f60bf19374b249e2eea8ea9587391a7f00813",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-05-20T17:00:27Z",
    "title_canon_sha256": "c68c7ce609f8fde9224ada1c2ee7222f580781affd87aa46e72224694186ecd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.5154",
    "kind": "arxiv",
    "version": 2
  }
}