Pith Number

pith:BBAHUMBY

pith:2019:BBAHUMBY227T4TUT2RPQSXLBOL

not attested not anchored not stored refs pending

Hierarchical Coded Matrix Multiplication

Nuwan Ferdinand, Shahrzad Kiani, Stark C. Draper

arxiv:1907.08818 v1 · 2019-07-20 · cs.IT · cs.DC · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BBAHUMBY227T4TUT2RPQSXLBOL}

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	2026-05-17T23:40:03.031414Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08407a3038d6bf3e4e93d45f095d6172c118337c56a2116c9b13b47898d3226d

Aliases

arxiv: 1907.08818 · arxiv_version: 1907.08818v1 · doi: 10.48550/arxiv.1907.08818 · pith_short_12: BBAHUMBY227T · pith_short_16: BBAHUMBY227T4TUT · pith_short_8: BBAHUMBY

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/BBAHUMBY227T4TUT2RPQSXLBOL \
  | 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: 08407a3038d6bf3e4e93d45f095d6172c118337c56a2116c9b13b47898d3226d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10ba821593c6254d1ee0505de5a6b6efccec7cc3c273a663870cf28e82e35802",
    "cross_cats_sorted": [
      "cs.DC",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-07-20T14:45:49Z",
    "title_canon_sha256": "4aab0a3ff4350ddbf2a7044905b1d78a973df17ad8d3544c7c047692c5f6f568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08818",
    "kind": "arxiv",
    "version": 1
  }
}