Pith Number

pith:GFJH7MQZ

pith:1995:GFJH7MQZOL5EBMV6OYGC6CPITH

not attested not anchored not stored refs pending

Log Sarkisov Program

Andrea Bruno, Kenji Matsuki

arxiv:alg-geom/9502007 v1 · 1995-02-10 · 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{GFJH7MQZOL5EBMV6OYGC6CPITH}

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	2026-05-18T01:37:42.999678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

31527fb21972fa40b2be760c2f09e899e010ee3b4483b5e68f42b1d7b7dda790

Aliases

arxiv: alg-geom/9502007 · arxiv_version: alg-geom/9502007v1 · doi: 10.48550/arxiv.alg-geom/9502007 · pith_short_12: GFJH7MQZOL5E · pith_short_16: GFJH7MQZOL5EBMV6 · pith_short_8: GFJH7MQZ

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/GFJH7MQZOL5EBMV6OYGC6CPITH \
  | 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: 31527fb21972fa40b2be760c2f09e899e010ee3b4483b5e68f42b1d7b7dda790

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e7ebf9480b1924495783edb26ff8c441deb02e3d3439d83e100f1c41d101157",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "alg-geom",
    "submitted_at": "1995-02-10T18:37:40Z",
    "title_canon_sha256": "5fd9d939b1b2f88bebb9b479d7851eeed124dc27410f66b4597c516b792f5025"
  },
  "schema_version": "1.0",
  "source": {
    "id": "alg-geom/9502007",
    "kind": "arxiv",
    "version": 1
  }
}