Pith Number

pith:N4CZXVKD

pith:1992:N4CZXVKDJFS6NENDS5OSKCCT35

not attested not anchored not stored refs pending

Two Two-dimensional Terminations

Valery Alexeev

arxiv:alg-geom/9206005 v1 · 1992-06-12 · 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{N4CZXVKDJFS6NENDS5OSKCCT35}

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	2026-05-18T01:37:43.200091Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f059bd5434965e691a3975d250853df6d054122c5f0476cfeb31b8249fb930c

Aliases

arxiv: alg-geom/9206005 · arxiv_version: alg-geom/9206005v1 · doi: 10.48550/arxiv.alg-geom/9206005 · pith_short_12: N4CZXVKDJFS6 · pith_short_16: N4CZXVKDJFS6NEND · pith_short_8: N4CZXVKD

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/N4CZXVKDJFS6NENDS5OSKCCT35 \
  | 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: 6f059bd5434965e691a3975d250853df6d054122c5f0476cfeb31b8249fb930c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef957cca0b186ae5a1a3b7a6aaf886dffb431b08e8fd8f444cea30c7f4fa95ba",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1992-06-12T20:13:52Z",
    "title_canon_sha256": "d832e68749efcf3fa6acf15d8694ca91cf0105474ada7590c07ea7155a46c322"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9206005",
    "kind": "arxiv",
    "version": 1
  }
}