Pith Number

pith:QS5ZE3FL

pith:2019:QS5ZE3FLN7L27YAUP2XNYF5SDY

not attested not anchored not stored refs pending

On certain complex surface singularities

Gerg\H{o} Pint\'er

arxiv:1904.12778 v1 · 2019-04-29 · math.AT · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QS5ZE3FLN7L27YAUP2XNYF5SDY}

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	2026-05-17T23:47:34.123473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

84bb926cab6fd7afe0147eaedc17b21e37adcec4c87d2703a354440f0d467cda

Aliases

arxiv: 1904.12778 · arxiv_version: 1904.12778v1 · doi: 10.48550/arxiv.1904.12778 · pith_short_12: QS5ZE3FLN7L2 · pith_short_16: QS5ZE3FLN7L27YAU · pith_short_8: QS5ZE3FL

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/QS5ZE3FLN7L27YAUP2XNYF5SDY \
  | 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: 84bb926cab6fd7afe0147eaedc17b21e37adcec4c87d2703a354440f0d467cda

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3d504d5e0ca4c38f5a3ac9e9270debfad9d34bad646007c3617779cca78993d",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-04-29T15:38:56Z",
    "title_canon_sha256": "c5fe4f10da69372ced7ddabe478c88f134edb2f8a76c903889ae85fe92139e45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12778",
    "kind": "arxiv",
    "version": 1
  }
}