Pith Number

pith:XPYDEJO5

pith:2015:XPYDEJO5I7S2YHSJ6J6AEM7M5A

not attested not anchored not stored refs pending

Improving the numerical stability of fast matrix multiplication

Alex Druinsky, Austin R. Benson, Benjamin Lipshitz, Grey Ballard, Oded Schwartz

arxiv:1507.00687 v2 · 2015-07-02 · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPYDEJO5I7S2YHSJ6J6AEM7M5A}

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	2026-05-18T01:10:38.517201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbf03225dd47e5ac1e49f27c0233ece83ca4178d3a415141f6b274b60e5ec3cf

Aliases

arxiv: 1507.00687 · arxiv_version: 1507.00687v2 · doi: 10.48550/arxiv.1507.00687 · pith_short_12: XPYDEJO5I7S2 · pith_short_16: XPYDEJO5I7S2YHSJ · pith_short_8: XPYDEJO5

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/XPYDEJO5I7S2YHSJ6J6AEM7M5A \
  | 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: bbf03225dd47e5ac1e49f27c0233ece83ca4178d3a415141f6b274b60e5ec3cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ade18f3867534a338ed5dc30ca27f0c2d31e5a89d669345805e49c8beff3f211",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2015-07-02T18:42:28Z",
    "title_canon_sha256": "caf1ef15ee13734a629b1c9b2a8e41aaff9dfdd92c869b8bd9489e41746c2306"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.00687",
    "kind": "arxiv",
    "version": 2
  }
}