Pith Number

pith:4GCBPZ7L

pith:2019:4GCBPZ7LXJCSS4KSHBXJ6ULKU7

not attested not anchored not stored refs pending

Cuboid Partitioning for Hierarchical Coded Matrix Multiplication

Nuwan Ferdinand, Shahrzad Kiani, Stark C. Draper

arxiv:1907.08819 v1 · 2019-07-20 · cs.IT · 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{4GCBPZ7LXJCSS4KSHBXJ6ULKU7}

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	2026-05-17T23:40:05.267991Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e18417e7ebba45297152386e9f516aa7c60b0fd945f3ec1e3d1a32e2111d8334

Aliases

arxiv: 1907.08819 · arxiv_version: 1907.08819v1 · doi: 10.48550/arxiv.1907.08819 · pith_short_12: 4GCBPZ7LXJCS · pith_short_16: 4GCBPZ7LXJCSS4KS · pith_short_8: 4GCBPZ7L

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/4GCBPZ7LXJCSS4KSHBXJ6ULKU7 \
  | 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: e18417e7ebba45297152386e9f516aa7c60b0fd945f3ec1e3d1a32e2111d8334

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d445e907859f1e55b1e82f2a61602fc5ba3a8ff69b8f521f2fedb56b2b9c64c",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2019-07-20T14:46:25Z",
    "title_canon_sha256": "7e88c4fd220637fbf7de2b8c68077c9b3cb103fe14c3d3187b5318f659a4895e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.08819",
    "kind": "arxiv",
    "version": 1
  }
}