Pith Number

pith:OY3UVI4H

pith:2001:OY3UVI4HKGLDZBI2YD4RXWRT5O

not attested not anchored not stored refs pending

On the topology of compact Stein surfaces

Burak Ozbagci, Selman Akbulut

arxiv:math/0103106 v2 · 2001-03-16 · math.GT · 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{OY3UVI4HKGLDZBI2YD4RXWRT5O}

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	2026-05-18T00:12:19.956686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76374aa38751963c851ac0f91bda33eb8301c9d4f9e398b61df51441b26b3768

Aliases

arxiv: math/0103106 · arxiv_version: math/0103106v2 · doi: 10.48550/arxiv.math/0103106 · pith_short_12: OY3UVI4HKGLD · pith_short_16: OY3UVI4HKGLDZBI2 · pith_short_8: OY3UVI4H

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/OY3UVI4HKGLDZBI2YD4RXWRT5O \
  | 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: 76374aa38751963c851ac0f91bda33eb8301c9d4f9e398b61df51441b26b3768

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "43b150b1cbffae006e0f0fc12521779ec104725d34e686c8ed5343cef36ff6e2",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2001-03-16T21:30:33Z",
    "title_canon_sha256": "a0c5be416c4f751832c3441ba51beb93e9e792c29bc55c901f30b72a602a60c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0103106",
    "kind": "arxiv",
    "version": 2
  }
}