Pith Number

pith:NAKAWYAT

pith:2019:NAKAWYAT5UD3ONW36IC2W5KWU4

not attested not anchored not stored refs pending

Calabi--Yau 3-folds from projective joins of del Pezzo manifolds

Daisuke Inoue

arxiv:1902.10040 v1 · 2019-02-26 · 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{NAKAWYAT5UD3ONW36IC2W5KWU4}

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	2026-05-17T23:52:34.813460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68140b6013ed07b736dbf205ab7556a73e2ba5099495afeac9841000eec683a0

Aliases

arxiv: 1902.10040 · arxiv_version: 1902.10040v1 · doi: 10.48550/arxiv.1902.10040 · pith_short_12: NAKAWYAT5UD3 · pith_short_16: NAKAWYAT5UD3ONW3 · pith_short_8: NAKAWYAT

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/NAKAWYAT5UD3ONW36IC2W5KWU4 \
  | 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: 68140b6013ed07b736dbf205ab7556a73e2ba5099495afeac9841000eec683a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19796ea379d4d25d86279260f305e3a4a45e6a04061fd535672015d9b6ca0355",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-02-26T16:34:18Z",
    "title_canon_sha256": "e31d0f991bd5768302c419d107ca055fe2d5fc329eaf1fa4e1b0625c2e5b7cb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10040",
    "kind": "arxiv",
    "version": 1
  }
}