Pith Number

pith:UXNNU3BP

pith:2002:UXNNU3BP6BBEDMMA3LOGC2LBUG

not attested not anchored not stored refs pending

Rational surfaces and symplectic 4-manifolds with one basic class

Jongil Park, Ronald Fintushel, Ronald J. Stern

arxiv:math/0202195 v2 · 2002-02-19 · math.GT · math.SG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UXNNU3BP6BBEDMMA3LOGC2LBUG}

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	2026-05-18T02:41:33.116747Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a5dada6c2ff04241b180dadc616961a187b859cd94f38f2115c6c645b471a7a4

Aliases

arxiv: math/0202195 · arxiv_version: math/0202195v2 · doi: 10.48550/arxiv.math/0202195 · pith_short_12: UXNNU3BP6BBE · pith_short_16: UXNNU3BP6BBEDMMA · pith_short_8: UXNNU3BP

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/UXNNU3BP6BBEDMMA3LOGC2LBUG \
  | 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: a5dada6c2ff04241b180dadc616961a187b859cd94f38f2115c6c645b471a7a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4fa4993a7fb29d3de36059fef2ff873a1e7325590b2930477611fd3ac21ece7e",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2002-02-19T16:27:32Z",
    "title_canon_sha256": "59f135e3a1224921826774e39a49f6bb5645a6dd24f3966efa5812406bae52e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0202195",
    "kind": "arxiv",
    "version": 2
  }
}