Pith Number

pith:JPQQASFU

pith:2014:JPQQASFU5GSFFBCO4SHRL4IGNS

not attested not anchored not stored refs pending

Efficient Algorithms and Error Analysis for the Modified Nystrom Method

Shusen Wang, Zhihua Zhang

arxiv:1404.0138 v1 · 2014-04-01 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JPQQASFU5GSFFBCO4SHRL4IGNS}

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	2026-05-18T02:55:05.059386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4be10048b4e9a452844ee48f15f1066c868bbaa58a3315022fb532f605c6f565

Aliases

arxiv: 1404.0138 · arxiv_version: 1404.0138v1 · doi: 10.48550/arxiv.1404.0138 · pith_short_12: JPQQASFU5GSF · pith_short_16: JPQQASFU5GSFFBCO · pith_short_8: JPQQASFU

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/JPQQASFU5GSFFBCO4SHRL4IGNS \
  | 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: 4be10048b4e9a452844ee48f15f1066c868bbaa58a3315022fb532f605c6f565

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87aa1c19a9644a40f9c2968764ae49284312730a2a476441c61297a663862772",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-04-01T06:26:55Z",
    "title_canon_sha256": "9d88f815c348d12ec728e75ca4d168cfd68708526a94155877734ad86c68ec63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.0138",
    "kind": "arxiv",
    "version": 1
  }
}