Pith Number

pith:DOIJ7WMC

pith:2019:DOIJ7WMCW2GUVO3UEKUIYFLMSA

not attested not anchored not stored refs pending

Simple Heuristics Yield Provable Algorithms for Masked Low-Rank Approximation

Cameron Musco, Christopher Musco, David P. Woodruff

arxiv:1904.09841 v4 · 2019-04-22 · cs.DS · cs.LG · cs.NA · math.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{DOIJ7WMCW2GUVO3UEKUIYFLMSA}

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	2026-06-04T20:14:26.671854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b909fd982b68d4abb7422a88c156c903d673b0c46051e561fb5ab6c2189d17d

Aliases

arxiv: 1904.09841 · arxiv_version: 1904.09841v4 · doi: 10.48550/arxiv.1904.09841 · pith_short_12: DOIJ7WMCW2GU · pith_short_16: DOIJ7WMCW2GUVO3U · pith_short_8: DOIJ7WMC

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/DOIJ7WMCW2GUVO3UEKUIYFLMSA \
  | 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: 1b909fd982b68d4abb7422a88c156c903d673b0c46051e561fb5ab6c2189d17d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e780d0c0e6ffb6f2ef37cdbbe74270531d7187d2cf8177e1b784453f918f9474",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2019-04-22T13:01:07Z",
    "title_canon_sha256": "73da82aec40ab54ff92da3b2cf1f40ca97b06868c803b2ac37df6b608cc09755"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09841",
    "kind": "arxiv",
    "version": 4
  }
}