Pith Number

pith:ZBWRZUCF

pith:2019:ZBWRZUCFDV5ZRKVZ5LXZY5BTLM

not attested not anchored not stored refs pending

Fast Convolutive Nonnegative Matrix Factorization Through Coordinate and Block Coordinate Updates

Alex H Williams, Anthony Degleris, Ben Antin, Surya Ganguli

arxiv:1907.00139 v1 · 2019-06-29 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZBWRZUCFDV5ZRKVZ5LXZY5BTLM}

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	2026-05-17T23:41:57.359589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c86d1cd0451d7b98aab9eaef9c74335b2564a315ddf927cce81a7762315da2a5

Aliases

arxiv: 1907.00139 · arxiv_version: 1907.00139v1 · doi: 10.48550/arxiv.1907.00139 · pith_short_12: ZBWRZUCFDV5Z · pith_short_16: ZBWRZUCFDV5ZRKVZ · pith_short_8: ZBWRZUCF

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/ZBWRZUCFDV5ZRKVZ5LXZY5BTLM \
  | 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: c86d1cd0451d7b98aab9eaef9c74335b2564a315ddf927cce81a7762315da2a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3be4a68c8da894b3521a744a7dcf8fb93e73317e582ae8a4d68de2b6ee698ebc",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-06-29T03:53:09Z",
    "title_canon_sha256": "12d6b5b22b4d423846db86df493e222b90a3cc2e0ebeb6700b5f828ed6f7b674"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00139",
    "kind": "arxiv",
    "version": 1
  }
}