Pith Number

pith:CKFSMNEK

pith:2015:CKFSMNEKR4XUS4VRE7DA5MTRB4

not attested not anchored not stored refs pending

A remark on the Ueno-Campana's threefold

Cinzia Bisi, Luca Tasin, Paolo Cascini

arxiv:1512.06639 v1 · 2015-12-21 · math.AG · math.CV · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKFSMNEKR4XUS4VRE7DA5MTRB4}

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	2026-05-18T01:23:59.977974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

128b26348a8f2f4972b127c60eb2710f0c755e0579e97e604522f76fbef2451c

Aliases

arxiv: 1512.06639 · arxiv_version: 1512.06639v1 · doi: 10.48550/arxiv.1512.06639 · pith_short_12: CKFSMNEKR4XU · pith_short_16: CKFSMNEKR4XUS4VR · pith_short_8: CKFSMNEK

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/CKFSMNEKR4XUS4VRE7DA5MTRB4 \
  | 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: 128b26348a8f2f4972b127c60eb2710f0c755e0579e97e604522f76fbef2451c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45f74943e7400f9c796cd0c4d854180da781c02fc2197fd34fd7b3cb443ca229",
    "cross_cats_sorted": [
      "math.CV",
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-12-21T14:25:08Z",
    "title_canon_sha256": "6c43d65c34e31bef3876638553f95cf55d43b5a77107cb38f204e5aabfe42e3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.06639",
    "kind": "arxiv",
    "version": 1
  }
}