Pith Number

pith:ROCN3UI5

pith:2013:ROCN3UI5Q3L3IF73ERBL62VBVO

not attested not anchored not stored refs pending

Normal complex surface singularities with rational homology disk smoothings

Andr\'as I. Stipsicz, Dongsoo Shin, Heesang Park

arxiv:1311.1929 v2 · 2013-11-08 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ROCN3UI5Q3L3IF73ERBL62VBVO}

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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	2026-05-18T02:52:32.165431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b84ddd11d86d7b417fb2442bf6aa1ab8f287bda91be5cd74b867416d6d8b666

Aliases

arxiv: 1311.1929 · arxiv_version: 1311.1929v2 · doi: 10.48550/arxiv.1311.1929 · pith_short_12: ROCN3UI5Q3L3 · pith_short_16: ROCN3UI5Q3L3IF73 · pith_short_8: ROCN3UI5

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/ROCN3UI5Q3L3IF73ERBL62VBVO \
  | 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: 8b84ddd11d86d7b417fb2442bf6aa1ab8f287bda91be5cd74b867416d6d8b666

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4468c8526676222297f35bcb2dba0547a990a0dbcd3bc955df1a1247ca200f3",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2013-11-08T10:56:20Z",
    "title_canon_sha256": "48bbc53b5c0dd1e32f092d4d02c22b27e15b44819a93b2ad2eb34f4b2bf3b00b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1929",
    "kind": "arxiv",
    "version": 2
  }
}