Pith Number

pith:2WLYSDLR

pith:2019:2WLYSDLRRUVO7WY3CKPC65DK3D

not attested not anchored not stored refs pending

Low-rank binary matrix approximation in column-sum norm

Fahad Panolan, Fedor V. Fomin, Kirill Simonov, Petr A. Golovach

arxiv:1904.06141 v1 · 2019-04-12 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2WLYSDLRRUVO7WY3CKPC65DK3D}

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	2026-05-17T23:48:43.978803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d597890d718d2aefdb1b129e2f746ad8faf638cf579cff06a8839aa30c6e4032

Aliases

arxiv: 1904.06141 · arxiv_version: 1904.06141v1 · doi: 10.48550/arxiv.1904.06141 · pith_short_12: 2WLYSDLRRUVO · pith_short_16: 2WLYSDLRRUVO7WY3 · pith_short_8: 2WLYSDLR

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/2WLYSDLRRUVO7WY3CKPC65DK3D \
  | 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: d597890d718d2aefdb1b129e2f746ad8faf638cf579cff06a8839aa30c6e4032

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fda4818ffeeeaba596890ff1c9c82e841bc11829feb7f5e94cab677d8b6a63b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-04-12T10:04:58Z",
    "title_canon_sha256": "4087ec9c9982d6ec6693b1c88f078312921f6743fcc00de4e561df257a4cfeb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.06141",
    "kind": "arxiv",
    "version": 1
  }
}