Pith Number

pith:JOJB6E4X

pith:2014:JOJB6E4XNA3KQGWASJMOMIN2OG

not attested not anchored not stored refs pending

Chern slopes of simply connected complex surfaces of general type are dense in [2,3]

Giancarlo Urz\'ua, Xavier Roulleau

arxiv:1402.5801 v2 · 2014-02-24 · math.AG · 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{JOJB6E4XNA3KQGWASJMOMIN2OG}

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	2026-05-18T02:38:10.203750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b921f13976836a81ac09258e621ba718f2ceb0782a7cf76009eac2235e97252

Aliases

arxiv: 1402.5801 · arxiv_version: 1402.5801v2 · doi: 10.48550/arxiv.1402.5801 · pith_short_12: JOJB6E4XNA3K · pith_short_16: JOJB6E4XNA3KQGWA · pith_short_8: JOJB6E4X

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/JOJB6E4XNA3KQGWASJMOMIN2OG \
  | 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: 4b921f13976836a81ac09258e621ba718f2ceb0782a7cf76009eac2235e97252

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64c48c15866b37ef3507b011e6f6eb3b5debd4bb8166a24edb101339cbd8d3f4",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-02-24T11:53:22Z",
    "title_canon_sha256": "8cc037c711b587f9d01465ed3084dba1443602c93826507a5c09e7e23efc5a72"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5801",
    "kind": "arxiv",
    "version": 2
  }
}