Pith Number

pith:CZIHDM5C

pith:2019:CZIHDM5CGDOLJCDAB4MACQAMZO

not attested not anchored not stored refs pending

Pell surfaces

J\'anos Koll\'ar

arxiv:1906.08818 v1 · 2019-06-20 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CZIHDM5CGDOLJCDAB4MACQAMZO}

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.

Cited by

1 paper in Pith

Fundamental groups and path lifting for algebraic varieties

Receipt and verification

First computed	2026-05-17T23:42:47.829827Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

165071b3a230dcb488600f1801400ccbb8eb5ab864506664ca4f6d59db2f677b

Aliases

arxiv: 1906.08818 · arxiv_version: 1906.08818v1 · doi: 10.48550/arxiv.1906.08818 · pith_short_12: CZIHDM5CGDOL · pith_short_16: CZIHDM5CGDOLJCDA · pith_short_8: CZIHDM5C

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/CZIHDM5CGDOLJCDAB4MACQAMZO \
  | 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: 165071b3a230dcb488600f1801400ccbb8eb5ab864506664ca4f6d59db2f677b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29e008bc5bfa289afcfb30ab4597e56b8a6b278268bdb3906502063a2ba65ba3",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-20T19:36:42Z",
    "title_canon_sha256": "d708fcda7b2fd15ba967edf2033920a1834353d893d3f6831a898472e50a20e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08818",
    "kind": "arxiv",
    "version": 1
  }
}