Pith Number

pith:CIKL6VWI

pith:2013:CIKL6VWIDPS33CYXW5V2HBVZUS

not attested not anchored not stored refs pending

Matrix Compression using the Nystro\"om Method

Alon Schclar, Amir Averbuch, Arik Nemtsov

arxiv:1305.0203 v1 · 2013-05-01 · 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{CIKL6VWIDPS33CYXW5V2HBVZUS}

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	2026-05-18T03:26:41.678598Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1214bf56c81be5bd8b17b76ba386b9a48fab6288bfe02dadf486209928afa5b3

Aliases

arxiv: 1305.0203 · arxiv_version: 1305.0203v1 · doi: 10.48550/arxiv.1305.0203 · pith_short_12: CIKL6VWIDPS3 · pith_short_16: CIKL6VWIDPS33CYX · pith_short_8: CIKL6VWI

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/CIKL6VWIDPS33CYXW5V2HBVZUS \
  | 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: 1214bf56c81be5bd8b17b76ba386b9a48fab6288bfe02dadf486209928afa5b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57cd880e68cddf7132b62014edfb47b43fa9214172c2e55b094ef32e0624dae7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2013-05-01T15:24:26Z",
    "title_canon_sha256": "a40afbc9f6cd767d43486b445193df754b1fcba9ba07de2cadd17e9fe28e8923"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0203",
    "kind": "arxiv",
    "version": 1
  }
}