Pith Number

pith:PLNJTYS4

pith:2009:PLNJTYS424TFK5WBLBK67X4F2E

not attested not anchored not stored refs pending

Weighted homogeneous singularities and rational homology disk smoothings

Andras I. Stipsicz, Mohan Bhupal

arxiv:0902.2277 v2 · 2009-02-13 · math.SG · 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{PLNJTYS424TFK5WBLBK67X4F2E}

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	2026-05-18T04:40:35.249274Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ada99e25cd7265576c15855efdf85d127802f248577b040fe15e3b38968ea88

Aliases

arxiv: 0902.2277 · arxiv_version: 0902.2277v2 · doi: 10.48550/arxiv.0902.2277 · pith_short_12: PLNJTYS424TF · pith_short_16: PLNJTYS424TFK5WB · pith_short_8: PLNJTYS4

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/PLNJTYS424TFK5WBLBK67X4F2E \
  | 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: 7ada99e25cd7265576c15855efdf85d127802f248577b040fe15e3b38968ea88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc3f88d1148763f3928afe9d2705d26138cc69a3147c9643ab64681ba33e7c5c",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2009-02-13T09:44:24Z",
    "title_canon_sha256": "2f88e3bc19e48db0b89d59698d65c6827f386d43cec254cab7aa3b6f8fef0584"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2277",
    "kind": "arxiv",
    "version": 2
  }
}