Pith Number

pith:K7HV6OSV

pith:2018:K7HV6OSVTAAMXXC6QIHLMKJUUW

not attested not anchored not stored refs pending

Efficient Distributed-Memory Parallel Matrix-Vector Multiplication with Wide or Tall Unstructured Sparse Matrices

Gyorgy Matyasfalvi, Jonathan Eckstein

arxiv:1812.00904 v1 · 2018-12-03 · cs.MS · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K7HV6OSVTAAMXXC6QIHLMKJUUW}

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	2026-05-17T23:59:18.623102Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57cf5f3a559800cbdc5e820eb62934a59cbd8422d2db885474be2c2b1e8b04ca

Aliases

arxiv: 1812.00904 · arxiv_version: 1812.00904v1 · doi: 10.48550/arxiv.1812.00904 · pith_short_12: K7HV6OSVTAAM · pith_short_16: K7HV6OSVTAAMXXC6 · pith_short_8: K7HV6OSV

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/K7HV6OSVTAAMXXC6QIHLMKJUUW \
  | 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: 57cf5f3a559800cbdc5e820eb62934a59cbd8422d2db885474be2c2b1e8b04ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "719f207082815f06f4e7e7c56614ab8a480ea608898ad0abd480b0bca7a00dfc",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2018-12-03T17:03:15Z",
    "title_canon_sha256": "ffdeec2223b276c9035f5257598cddf65e7f0153270e3d7c4dd3403a450f65fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00904",
    "kind": "arxiv",
    "version": 1
  }
}