Pith Number

pith:OWV4OHPX

pith:2019:OWV4OHPXRS7ELLI6EI52JZUWRA

not attested not anchored not stored refs pending

The I/O complexity of hybrid algorithms for square matrix multiplication

Lorenzo De Stefani

arxiv:1904.12804 v1 · 2019-04-29 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OWV4OHPXRS7ELLI6EI52JZUWRA}

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	2026-05-17T23:47:32.217071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75abc71df78cbe45ad1e223ba4e696880b50080098d8736ef596f69bef200bf8

Aliases

arxiv: 1904.12804 · arxiv_version: 1904.12804v1 · doi: 10.48550/arxiv.1904.12804 · pith_short_12: OWV4OHPXRS7E · pith_short_16: OWV4OHPXRS7ELLI6 · pith_short_8: OWV4OHPX

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/OWV4OHPXRS7ELLI6EI52JZUWRA \
  | 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: 75abc71df78cbe45ad1e223ba4e696880b50080098d8736ef596f69bef200bf8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2f29e120d74c88a01aa045a58a323e70bd2e938fcf92790176c44b34aeeeb6c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-04-29T16:39:50Z",
    "title_canon_sha256": "9a68a237397e0ae5a752998e98b49f7f8140a18c8617ee334dc84334944c6dcc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.12804",
    "kind": "arxiv",
    "version": 1
  }
}