Pith Number

pith:SAKQCLHP

pith:2019:SAKQCLHPQQHDJXGCXEYQDESRF5

not attested not anchored not stored refs pending

On smooth Fano fourfolds of Picard number two

Antonio Laface, Christian Mauz, Juergen Hausen

arxiv:1907.08000 v3 · 2019-07-18 · 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{SAKQCLHPQQHDJXGCXEYQDESRF5}

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

Terminal Fano four folds in low codimension

Receipt and verification

First computed	2026-07-05T11:28:55.193636Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9015012cef840e34dcc2b9310192512f683b79875aa5404482ea9c077010566d

Aliases

arxiv: 1907.08000 · arxiv_version: 1907.08000v3 · doi: 10.48550/arxiv.1907.08000 · pith_short_12: SAKQCLHPQQHD · pith_short_16: SAKQCLHPQQHDJXGC · pith_short_8: SAKQCLHP

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/SAKQCLHPQQHDJXGCXEYQDESRF5 \
  | 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: 9015012cef840e34dcc2b9310192512f683b79875aa5404482ea9c077010566d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ded04f0c30a3ab44e462e12a590a0e099552ee536496bc2879e48f0e280c8714",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-18T11:32:59Z",
    "title_canon_sha256": "35c684272550e120c2985ce4216a6d8dc5d9ab761e37aca9921c28d3cac350a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08000",
    "kind": "arxiv",
    "version": 3
  }
}