Pith Number

pith:4TKQIEOG

pith:2013:4TKQIEOG6LSA75OMR5PCSFFADH

not attested not anchored not stored refs pending

Ellipsoidal Rounding for Nonnegative Matrix Factorization Under Noisy Separability

Tomohiko Mizutani

arxiv:1309.5701 v2 · 2013-09-23 · 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{4TKQIEOG6LSA75OMR5PCSFFADH}

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	2026-05-18T02:25:34.306757Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4d50411c6f2e40ff5cc8f5e2914a019eeafa513cd2cf465f8d9421e4ceb1ede

Aliases

arxiv: 1309.5701 · arxiv_version: 1309.5701v2 · doi: 10.48550/arxiv.1309.5701 · pith_short_12: 4TKQIEOG6LSA · pith_short_16: 4TKQIEOG6LSA75OM · pith_short_8: 4TKQIEOG

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/4TKQIEOG6LSA75OMR5PCSFFADH \
  | 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: e4d50411c6f2e40ff5cc8f5e2914a019eeafa513cd2cf465f8d9421e4ceb1ede

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36ee66522a4771d8bf020632cf790a18539ea3eff2a0d038634950b6a5c35f36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2013-09-23T06:19:54Z",
    "title_canon_sha256": "6e48e6f169df7d26e50cd3fd7811615e35fdf1ab4af03496962b6a9f319b79fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5701",
    "kind": "arxiv",
    "version": 2
  }
}