Pith Number

pith:2T5H3ENU

pith:2013:2T5H3ENUOXXUV5CL2RSUDDA3OG

not attested not anchored not stored refs pending

A unified sparse matrix data format for efficient general sparse matrix-vector multiply on modern processors with wide SIMD units

Alan R. Bishop, Georg Hager, Gerhard Wellein, Holger Fehske, Moritz Kreutzer

arxiv:1307.6209 v2 · 2013-07-23 · cs.MS · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2T5H3ENUOXXUV5CL2RSUDDA3OG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:39:48.722633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4fa7d91b475ef4af44bd465418c1b71a3470c1056b00970daaf00959a29c57c

Aliases

arxiv: 1307.6209 · arxiv_version: 1307.6209v2 · doi: 10.48550/arxiv.1307.6209 · pith_short_12: 2T5H3ENUOXXU · pith_short_16: 2T5H3ENUOXXUV5CL · pith_short_8: 2T5H3ENU

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/2T5H3ENUOXXUV5CL2RSUDDA3OG \
  | 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: d4fa7d91b475ef4af44bd465418c1b71a3470c1056b00970daaf00959a29c57c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d7f3fa009f80655f717f9a25a72177d582e5973d8874dd18df8d75339e677e6",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2013-07-23T12:50:28Z",
    "title_canon_sha256": "173b3b4126317eb30de1f4a3110f7c5296931235dfd51818e61094fa079e2fae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6209",
    "kind": "arxiv",
    "version": 2
  }
}