Pith Number

pith:ZXTXZULH

pith:2019:ZXTXZULHVPTH44IUGV5MNW2UZB

not attested not anchored not stored refs pending

On Fast Matrix Inversion via Fast Matrix Multiplication

Zak Tonks

arxiv:1901.00904 v1 · 2019-01-03 · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXTXZULHVPTH44IUGV5MNW2UZB}

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	2026-05-17T23:56:57.723444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cde77cd167abe67e7114357ac6db54c84a53aaf58aa3ffca58df38edfc781617

Aliases

arxiv: 1901.00904 · arxiv_version: 1901.00904v1 · doi: 10.48550/arxiv.1901.00904 · pith_short_12: ZXTXZULHVPTH · pith_short_16: ZXTXZULHVPTH44IU · pith_short_8: ZXTXZULH

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/ZXTXZULHVPTH44IUGV5MNW2UZB \
  | 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: cde77cd167abe67e7114357ac6db54c84a53aaf58aa3ffca58df38edfc781617

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "345e53d6939486f814c38c67338428130fd882fed7d9888a1fbbdc5809109938",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2019-01-03T20:20:13Z",
    "title_canon_sha256": "a80b2ebf1418ed491746507d1ddfa20d2723d265e1dd93626e2c46efe6ca340c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00904",
    "kind": "arxiv",
    "version": 1
  }
}