Pith Number

pith:5N7X5MAZ

pith:2018:5N7X5MAZSERLQDVUQCFGYYNHFA

not attested not anchored not stored refs pending

Error correction in fast matrix multiplication and inverse

Daniel S. Roche

arxiv:1802.02270 v1 · 2018-02-07 · cs.SC · 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{5N7X5MAZSERLQDVUQCFGYYNHFA}

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	2026-05-18T00:24:08.730355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb7f7eb0199122b80eb4808a6c61a7283782a75cd90bb5160e70c9a6cd631992

Aliases

arxiv: 1802.02270 · arxiv_version: 1802.02270v1 · doi: 10.48550/arxiv.1802.02270 · pith_short_12: 5N7X5MAZSERL · pith_short_16: 5N7X5MAZSERLQDVU · pith_short_8: 5N7X5MAZ

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/5N7X5MAZSERLQDVUQCFGYYNHFA \
  | 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: eb7f7eb0199122b80eb4808a6c61a7283782a75cd90bb5160e70c9a6cd631992

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffbe952c8606ad76f36eee5691eaf7defe3f9f541347ef61a3ca78e2bd60ba21",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2018-02-07T00:20:12Z",
    "title_canon_sha256": "5bef6d94a57187ce577d0456ab9ff3e6955376fb7b23810fda1f44774a7384bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02270",
    "kind": "arxiv",
    "version": 1
  }
}