Pith Number

pith:FEY2UCNF

pith:2018:FEY2UCNFDHONY5DYU73MMXF6F2

not attested not anchored not stored refs pending

Edge and Fano on nets of quadrics

Alessandro Verra

arxiv:1805.00204 v1 · 2018-05-01 · 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{FEY2UCNFDHONY5DYU73MMXF6F2}

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	2026-05-18T00:17:10.292951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2931aa09a519dcdc7478a7f6c65cbe2ea1e718d4ad7c478d442f10b0a795178f

Aliases

arxiv: 1805.00204 · arxiv_version: 1805.00204v1 · doi: 10.48550/arxiv.1805.00204 · pith_short_12: FEY2UCNFDHON · pith_short_16: FEY2UCNFDHONY5DY · pith_short_8: FEY2UCNF

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/FEY2UCNFDHONY5DYU73MMXF6F2 \
  | 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: 2931aa09a519dcdc7478a7f6c65cbe2ea1e718d4ad7c478d442f10b0a795178f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "202620e684e4136a9d664b8f7ca9f009ca3c8a4ca2529348c3a4b324aaa57955",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-05-01T06:34:16Z",
    "title_canon_sha256": "dd120c4d290aeb9fc49f80b9d4205b1e3369c492f2ec09c38590e986f69c65d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00204",
    "kind": "arxiv",
    "version": 1
  }
}