Pith Number

pith:3UIBMWYE

pith:2009:3UIBMWYEVVBFBRNUUSL63T7IFL

not attested not anchored not stored refs pending

Families over special base manifolds and a conjecture of Campana

Kelly Jabbusch, Stefan Kebekus

arxiv:0905.1746 v2 · 2009-05-12 · math.AG · math.CV · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3UIBMWYEVVBFBRNUUSL63T7IFL}

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	2026-05-18T04:07:43.290501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd10165b04ad4250c5b4a497edcfe82ad107340fb57d5d008460b025437f9808

Aliases

arxiv: 0905.1746 · arxiv_version: 0905.1746v2 · doi: 10.48550/arxiv.0905.1746 · pith_short_12: 3UIBMWYEVVBF · pith_short_16: 3UIBMWYEVVBFBRNU · pith_short_8: 3UIBMWYE

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/3UIBMWYEVVBFBRNUUSL63T7IFL \
  | 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: dd10165b04ad4250c5b4a497edcfe82ad107340fb57d5d008460b025437f9808

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b7659014e056029e89813ccda1c26f743619c5abe608ddb27e6c8fde1755a38",
    "cross_cats_sorted": [
      "math.CV",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-05-12T04:18:38Z",
    "title_canon_sha256": "b776e95196d624c4584abc106783e1f48bb0d01ac8ef5c2cd4bb4af6d30e7ab8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1746",
    "kind": "arxiv",
    "version": 2
  }
}