Pith Number

pith:3YS2JOK3

pith:2012:3YS2JOK3B3R2YNUA6SSLOQLNOE

not attested not anchored not stored refs pending

Fast Computation of Smith Forms of Sparse Matrices Over Local Rings

Andy Novocin, B. David Saunders, Mark Giesbrecht, Mustafa Elsheikh

arxiv:1201.5365 v2 · 2012-01-25 · cs.SC · math.AC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3YS2JOK3B3R2YNUA6SSLOQLNOE}

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	2026-05-18T03:56:46.015945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de25a4b95b0ee3ac3680f4a4b7416d713a972f4a36c8656f4fb922c93db89000

Aliases

arxiv: 1201.5365 · arxiv_version: 1201.5365v2 · doi: 10.48550/arxiv.1201.5365 · pith_short_12: 3YS2JOK3B3R2 · pith_short_16: 3YS2JOK3B3R2YNUA · pith_short_8: 3YS2JOK3

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/3YS2JOK3B3R2YNUA6SSLOQLNOE \
  | 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: de25a4b95b0ee3ac3680f4a4b7416d713a972f4a36c8656f4fb922c93db89000

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93d98d131d413fee3e58ad851f5ca6721fa0171fa2a5d8741f51b51437f3ac6c",
    "cross_cats_sorted": [
      "math.AC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SC",
    "submitted_at": "2012-01-25T20:32:55Z",
    "title_canon_sha256": "0723253cfc5454b9addd7cac8706a3f76bd9820c0f71f9a8368aa77ebb69d4e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5365",
    "kind": "arxiv",
    "version": 2
  }
}