Pith Number

pith:KDYETZTZ

pith:2007:KDYETZTZ2LEB54CBVLTBJHKY2I

not attested not anchored not stored refs pending

Equivalence of types and Catlin boundary systems

Andreea C. Nicoara

arxiv:0711.0429 v2 · 2007-11-03 · math.CV · 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{KDYETZTZ2LEB54CBVLTBJHKY2I}

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	2026-05-18T03:15:56.205674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50f049e679d2c81ef041aae6149d58d207aee1bedc0de7096aab0369e6149722

Aliases

arxiv: 0711.0429 · arxiv_version: 0711.0429v2 · doi: 10.48550/arxiv.0711.0429 · pith_short_12: KDYETZTZ2LEB · pith_short_16: KDYETZTZ2LEB54CB · pith_short_8: KDYETZTZ

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/KDYETZTZ2LEB54CBVLTBJHKY2I \
  | 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: 50f049e679d2c81ef041aae6149d58d207aee1bedc0de7096aab0369e6149722

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a743895d0e3258b26023b97158ab1d6c95ca896b1b8bbebb69e41e2c1461e34",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.CV",
    "submitted_at": "2007-11-03T06:02:48Z",
    "title_canon_sha256": "91ada3c8f2f8714d2e0005f79bd49afd694b41faafc2bdfbc4c98b7f404267f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.0429",
    "kind": "arxiv",
    "version": 2
  }
}