Pith Number

pith:RBCOQGON

pith:2012:RBCOQGON2YJYTJS75PGTJNAZU4

not attested not anchored not stored refs pending

Spectral Clustering: An empirical study of Approximation Algorithms and its Application to the Attrition Problem

A. Thompson, B. Cung, C. Boutsidis, D. Needell, J. Ramirez, T. Jin

arxiv:1211.3444 v1 · 2012-11-14 · cs.LG · math.NA · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RBCOQGON2YJYTJS75PGTJNAZU4}

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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	2026-05-18T03:40:48.766948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8844e819cdd61389a65febcd34b419a7178fdd10d2420913c26e26af6e5c9050

Aliases

arxiv: 1211.3444 · arxiv_version: 1211.3444v1 · doi: 10.48550/arxiv.1211.3444 · pith_short_12: RBCOQGON2YJY · pith_short_16: RBCOQGON2YJYTJS7 · pith_short_8: RBCOQGON

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/RBCOQGON2YJYTJS75PGTJNAZU4 \
  | 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: 8844e819cdd61389a65febcd34b419a7178fdd10d2420913c26e26af6e5c9050

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5de50041c27685202a7b458e9bb7ffd1a023e664569888e88b2b93a51d7e15f",
    "cross_cats_sorted": [
      "math.NA",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-11-14T22:05:09Z",
    "title_canon_sha256": "2e36b7117675eb12f3def63056fb363c12dae5dea58ae00dee14dadadf6a0ca1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3444",
    "kind": "arxiv",
    "version": 1
  }
}