Pith Number

pith:YQJFSMZH

pith:2008:YQJFSMZHDZCM5RJ5EDSCICFDU5

not attested not anchored not stored refs pending

A simply connected surface of general type with p_g=0 and K^2=4

Dongsoo Shin, Heesang Park, Jongil Park

arxiv:0803.3667 v3 · 2008-03-26 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YQJFSMZHDZCM5RJ5EDSCICFDU5}

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	2026-05-18T02:38:19.165902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4125933271e44cec53d20e42408a3a765a6148075f35a4c9a3dcbc73b91da42

Aliases

arxiv: 0803.3667 · arxiv_version: 0803.3667v3 · doi: 10.48550/arxiv.0803.3667 · pith_short_12: YQJFSMZHDZCM · pith_short_16: YQJFSMZHDZCM5RJ5 · pith_short_8: YQJFSMZH

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/YQJFSMZHDZCM5RJ5EDSCICFDU5 \
  | 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: c4125933271e44cec53d20e42408a3a765a6148075f35a4c9a3dcbc73b91da42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e004ae347d0ecb099d7b9832d08053441ff5f8e686d22e36159aaaf4e8729a9",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2008-03-26T06:17:08Z",
    "title_canon_sha256": "03c84ef98684f82011bb03b1a94cf27a48bc81527b64b12b91b66103bd0f24dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.3667",
    "kind": "arxiv",
    "version": 3
  }
}