Pith Number

pith:5X47MQRA

pith:2016:5X47MQRABPYEXP4DBKGCCJJXLM

not attested not anchored not stored refs pending

On the Fano variety of linear spaces contained in two odd-dimensional quadrics

Carolina Araujo, Cinzia Casagrande

arxiv:1602.02372 v2 · 2016-02-07 · 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{5X47MQRABPYEXP4DBKGCCJJXLM}

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	2026-05-18T00:20:59.828672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edf9f642200bf04bbf830a8c2125375b27cef4a33dafddfa8b4d2ae6cedae77d

Aliases

arxiv: 1602.02372 · arxiv_version: 1602.02372v2 · doi: 10.48550/arxiv.1602.02372 · pith_short_12: 5X47MQRABPYE · pith_short_16: 5X47MQRABPYEXP4D · pith_short_8: 5X47MQRA

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/5X47MQRABPYEXP4DBKGCCJJXLM \
  | 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: edf9f642200bf04bbf830a8c2125375b27cef4a33dafddfa8b4d2ae6cedae77d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "637b506a792c05c308f2fcf62dcc6c5be5792ccbda9c1f88e13ef598264d6e08",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-02-07T13:28:24Z",
    "title_canon_sha256": "b2344e3319fbbddbbaa99f543bbe4fb792366ed1e9f38b3ade3156256c38260a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.02372",
    "kind": "arxiv",
    "version": 2
  }
}