Pith Number

pith:5NDPUDLZ

pith:1995:5NDPUDLZ4TULSIR5UCDAVEEAAH

not attested not anchored not stored refs pending

Primitive Calabi-Yau Threefolds

Mark Gross

arxiv:alg-geom/9512002 v1 · 1995-12-04 · alg-geom · 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{5NDPUDLZ4TULSIR5UCDAVEEAAH}

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

Calabi-Yau threefolds across quadratic singularities

Receipt and verification

First computed	2026-05-18T01:37:42.897708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb46fa0d79e4e8b9223da0860a908001f41bb8579d047f96f8bd9fcb7ac57b70

Aliases

arxiv: alg-geom/9512002 · arxiv_version: alg-geom/9512002v1 · doi: 10.48550/arxiv.alg-geom/9512002 · pith_short_12: 5NDPUDLZ4TUL · pith_short_16: 5NDPUDLZ4TULSIR5 · pith_short_8: 5NDPUDLZ

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/5NDPUDLZ4TULSIR5UCDAVEEAAH \
  | 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: eb46fa0d79e4e8b9223da0860a908001f41bb8579d047f96f8bd9fcb7ac57b70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee6e46ee9b957ae5a4ddfcf4d1227d647fe3cd1168e53b580272d5817ba3679c",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1995-12-04T11:59:24Z",
    "title_canon_sha256": "38f45c22c0d0a6472a64b8a22629d5b3ecb0dfc796ce53081b9683074f5fd2e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9512002",
    "kind": "arxiv",
    "version": 1
  }
}