Pith Number

pith:XV2CVNBD

pith:2016:XV2CVNBDWF7D5IQGUVGQRRGSA2

not attested not anchored not stored refs pending

L\'evy NMF for robust nonnegative source separation

Antoine Liutkus, Paul Magron, Roland Badeau

arxiv:1608.01844 v2 · 2016-08-05 · cs.SD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XV2CVNBDWF7D5IQGUVGQRRGSA2}

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	2026-05-18T00:59:57.617866Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd742ab423b17e3ea206a54d08c4d206bfa6fe0e49d0c03748eac0d0a87b93a0

Aliases

arxiv: 1608.01844 · arxiv_version: 1608.01844v2 · doi: 10.48550/arxiv.1608.01844 · pith_short_12: XV2CVNBDWF7D · pith_short_16: XV2CVNBDWF7D5IQG · pith_short_8: XV2CVNBD

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/XV2CVNBDWF7D5IQGUVGQRRGSA2 \
  | 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: bd742ab423b17e3ea206a54d08c4d206bfa6fe0e49d0c03748eac0d0a87b93a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ab43bed93117253e72852954117c92a902e67b6cdd8dd8bc16fe839e78e3124",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2016-08-05T11:48:58Z",
    "title_canon_sha256": "2b6ab342c27b5d5b77362b19527080500716bfe01bda1c6d9a25cd1fb0929a7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.01844",
    "kind": "arxiv",
    "version": 2
  }
}