Pith Number

pith:UNH4EO3D

pith:2016:UNH4EO3DTL3MA7CCFNTGMOZLQJ

not attested not anchored not stored refs pending

Fast and Effective Algorithms for Symmetric Nonnegative Matrix Factorization

Aggelos Katsaggelos, Jeremy Watt, Reza Borhani

arxiv:1609.05342 v1 · 2016-09-17 · cs.CV · 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{UNH4EO3DTL3MA7CCFNTGMOZLQJ}

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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	2026-05-18T01:04:26.704145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a34fc23b639af6c07c422b66663b2b8254fcb046c8b9baa968cf634c3725a99f

Aliases

arxiv: 1609.05342 · arxiv_version: 1609.05342v1 · doi: 10.48550/arxiv.1609.05342 · pith_short_12: UNH4EO3DTL3M · pith_short_16: UNH4EO3DTL3MA7CC · pith_short_8: UNH4EO3D

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/UNH4EO3DTL3MA7CCFNTGMOZLQJ \
  | 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: a34fc23b639af6c07c422b66663b2b8254fcb046c8b9baa968cf634c3725a99f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf8d0151791e279891c4de45c5ea7e11913b9512b28caeb4323c4a1a441c7ada",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2016-09-17T14:41:32Z",
    "title_canon_sha256": "ebae53bf2bcbe5fe9c1125490275d6d2ca42761b9917b25114a63eeb8f586a0e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.05342",
    "kind": "arxiv",
    "version": 1
  }
}