Pith Number

pith:E5XUATIY

pith:2021:E5XUATIYGKB57QUJ2YY7SLVD3U

not attested not anchored not stored refs pending

Diffeomorphism classes of the doubling Calabi-Yau threefolds with Picard number two

Naoto Yotsutani

arxiv:2101.11841 v3 · 2021-01-28 · math.AG · math.AT · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E5XUATIYGKB57QUJ2YY7SLVD3U}

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

Smoothing toroidal crossing spaces

Receipt and verification

First computed	2026-07-05T05:36:28.841168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

276f404d183283dfc289d631f92ea3dd0a9e35dc405383326255e35bfabe5e13

Aliases

arxiv: 2101.11841 · arxiv_version: 2101.11841v3 · doi: 10.48550/arxiv.2101.11841 · pith_short_12: E5XUATIYGKB5 · pith_short_16: E5XUATIYGKB57QUJ · pith_short_8: E5XUATIY

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/E5XUATIYGKB57QUJ2YY7SLVD3U \
  | 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: 276f404d183283dfc289d631f92ea3dd0a9e35dc405383326255e35bfabe5e13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5abda8d1f459f764263146b25a960b98267af111479dbc16a1548575b531e13f",
    "cross_cats_sorted": [
      "math.AT",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2021-01-28T07:22:13Z",
    "title_canon_sha256": "776091993158d508e7917ce2bf62f5d56565e68fed91d041c9e81ba779ccfa52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.11841",
    "kind": "arxiv",
    "version": 3
  }
}