Pith Number

pith:OAZMBGEG

pith:2012:OAZMBGEGSDJ53FUY2RYE4YGMHZ

not attested not anchored not stored refs pending

Deterministic algorithms for skewed matrix products

Konstantin Kutzkov

arxiv:1209.4508 v1 · 2012-09-20 · cs.DS · 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{OAZMBGEGSDJ53FUY2RYE4YGMHZ}

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	2026-05-18T03:45:11.492954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7032c0988690d3dd9698d4704e60cc3e7b6a47ddfecc8e0479cdaeff6c85ba42

Aliases

arxiv: 1209.4508 · arxiv_version: 1209.4508v1 · doi: 10.48550/arxiv.1209.4508 · pith_short_12: OAZMBGEGSDJ5 · pith_short_16: OAZMBGEGSDJ53FUY · pith_short_8: OAZMBGEG

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/OAZMBGEGSDJ53FUY2RYE4YGMHZ \
  | 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: 7032c0988690d3dd9698d4704e60cc3e7b6a47ddfecc8e0479cdaeff6c85ba42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e81646930ba2785525a5bba7c74ab9cd3ce334483dba75cb642c94a6c36b9c38",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-09-20T12:27:15Z",
    "title_canon_sha256": "870120f83221e4bfb4658e57063d3d8b6b130b10c0abc2878eea7e7a8a9f464e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.4508",
    "kind": "arxiv",
    "version": 1
  }
}