Pith Number

pith:RXDNJSQW

pith:2016:RXDNJSQWSZHLCAMQI54OVB63EA

not attested not anchored not stored refs pending

Non-Negative Matrix Factorization Test Cases

Connor Sell, Jeremy Kepner

arxiv:1701.00016 v1 · 2016-12-30 · math.NA · cs.AI · cs.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{RXDNJSQWSZHLCAMQI54OVB63EA}

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	2026-05-17T23:58:19.760168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc6d4ca16964eb101904778ea87db201c40c0863dc999d9c01ee51b518e5ff3

Aliases

arxiv: 1701.00016 · arxiv_version: 1701.00016v1 · doi: 10.48550/arxiv.1701.00016 · pith_short_12: RXDNJSQWSZHL · pith_short_16: RXDNJSQWSZHLCAMQ · pith_short_8: RXDNJSQW

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/RXDNJSQWSZHLCAMQI54OVB63EA \
  | 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: 8dc6d4ca16964eb101904778ea87db201c40c0863dc999d9c01ee51b518e5ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "861a7d286aa38192896b9eec869a8b1abf8f24564bde402cd95fca303217e136",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-12-30T21:18:01Z",
    "title_canon_sha256": "6167e206d34b5b175671f6719a67d165b287c90e1abcdfe0db6cf611c76b91f0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.00016",
    "kind": "arxiv",
    "version": 1
  }
}