Pith Number

pith:NZ3ZZOHB

pith:2014:NZ3ZZOHBAD4J6KO3P2TBRXJJN7

not attested not anchored not stored refs pending

kappa_SQ: A Matlab package for randomized sampling of matrices with orthonormal columns

Ilse Ipsen, Thomas Wentworth

arxiv:1402.0642 v1 · 2014-02-04 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NZ3ZZOHBAD4J6KO3P2TBRXJJN7}

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	2026-05-18T03:00:13.407039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e779cb8e100f89f29db7ea618dd296fcf9254cf5ab849949ae19402267e8c79

Aliases

arxiv: 1402.0642 · arxiv_version: 1402.0642v1 · doi: 10.48550/arxiv.1402.0642 · pith_short_12: NZ3ZZOHBAD4J · pith_short_16: NZ3ZZOHBAD4J6KO3 · pith_short_8: NZ3ZZOHB

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/NZ3ZZOHBAD4J6KO3P2TBRXJJN7 \
  | 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: 6e779cb8e100f89f29db7ea618dd296fcf9254cf5ab849949ae19402267e8c79

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c86363e0f452e5907d98adadaf9ef477e9eafe7564abab38fbab33cd0af73698",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-02-04T07:17:01Z",
    "title_canon_sha256": "3f003ad2167c22f5c4135c44598bb834cfdc6b4752b390fcab5c0acdbf16c0d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.0642",
    "kind": "arxiv",
    "version": 1
  }
}