Pith Number

pith:4SVF2JQJ

pith:1995:4SVF2JQJI5JYL2EQQXSNSEXQO3

not attested not anchored not stored refs pending

A Vector Bundle of Rank 2 on P1 x P3

H. Lange

arxiv:alg-geom/9506021 v1 · 1995-06-26 · 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{4SVF2JQJI5JYL2EQQXSNSEXQO3}

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	2026-05-18T01:37:42.924985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4aa5d2609475385e89085e4d912f076ea586a417cc033c3732ad325a865dd9e

Aliases

arxiv: alg-geom/9506021 · arxiv_version: alg-geom/9506021v1 · doi: 10.48550/arxiv.alg-geom/9506021 · pith_short_12: 4SVF2JQJI5JY · pith_short_16: 4SVF2JQJI5JYL2EQ · pith_short_8: 4SVF2JQJ

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/4SVF2JQJI5JYL2EQQXSNSEXQO3 \
  | 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: e4aa5d2609475385e89085e4d912f076ea586a417cc033c3732ad325a865dd9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a649070f1ad74a63fb7916d7efe42f19b7b116c472236c89f43694f93fb1c5f",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1995-06-26T13:12:44Z",
    "title_canon_sha256": "70dada24a3c57e13696cbacfbbe4b1c1c42f817bdb742ff4fd8d17750f57b85a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9506021",
    "kind": "arxiv",
    "version": 1
  }
}