Pith Number

pith:SSCATA4V

pith:2012:SSCATA4VKN3ECK5JIBPWQZJOWX

not attested not anchored not stored refs pending

An Improved Bound for the Nystrom Method for Large Eigengap

Mehrdad Mahdavi, Rong Jin, Tianbao Yang

arxiv:1209.0001 v1 · 2012-08-30 · cs.LG · cs.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{SSCATA4VKN3ECK5JIBPWQZJOWX}

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	2026-05-18T03:46:30.342578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94840983955376412ba9405f68652eb5cbe2a002f65188762b04710ef5e01263

Aliases

arxiv: 1209.0001 · arxiv_version: 1209.0001v1 · doi: 10.48550/arxiv.1209.0001 · pith_short_12: SSCATA4VKN3E · pith_short_16: SSCATA4VKN3ECK5J · pith_short_8: SSCATA4V

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/SSCATA4VKN3ECK5JIBPWQZJOWX \
  | 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: 94840983955376412ba9405f68652eb5cbe2a002f65188762b04710ef5e01263

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4113c186d1af534d0a88da8da47fca69c72f9c9cca8f283b4068cb648fadc903",
    "cross_cats_sorted": [
      "cs.NA",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2012-08-30T20:40:06Z",
    "title_canon_sha256": "bafd58bae647eceb1b989e8750a92f6916808dad811fc6fb65117befa3f9ca46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.0001",
    "kind": "arxiv",
    "version": 1
  }
}