Pith Number

pith:OJR4T5I7

pith:1994:OJR4T5I7NJVR47S4SFKJJWADPM

not attested not anchored not stored refs pending

Log Smooth Deformation Theory

Fumiharu Kato

arxiv:alg-geom/9406004 v3 · 1994-06-15 · 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{OJR4T5I7NJVR47S4SFKJJWADPM}

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	2026-07-04T15:07:13.582967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7263c9f51f6a6b1e7e5c915494d8037b20cf3f900157b06e95610838cff8ba5a

Aliases

arxiv: alg-geom/9406004 · arxiv_version: alg-geom/9406004v3 · doi: 10.48550/arxiv.alg-geom/9406004 · pith_short_12: OJR4T5I7NJVR · pith_short_16: OJR4T5I7NJVR47S4 · pith_short_8: OJR4T5I7

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/OJR4T5I7NJVR47S4SFKJJWADPM \
  | 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: 7263c9f51f6a6b1e7e5c915494d8037b20cf3f900157b06e95610838cff8ba5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13ba35132b3c7942801b7b76d006382530710c30632e96fe7bcb97b60baa226a",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1994-06-15T08:42:17Z",
    "title_canon_sha256": "f9860e10e1db234aecbcb56bd8ff91c7f1db8ab68386720ea611d8c3cd3b09a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9406004",
    "kind": "arxiv",
    "version": 3
  }
}