Pith Number

pith:7C5BJXSQ

pith:2021:7C5BJXSQTEEGFMZISRV5SWA2N4

not attested not anchored not stored refs pending

Riemannian Perspective on Matrix Factorization

Felipe Suarez, Kwangjun Ahn

arxiv:2102.00937 v1 · 2021-02-01 · math.OC · cs.LG · math.DG · 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{7C5BJXSQTEEGFMZISRV5SWA2N4}

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	2026-07-05T02:11:16.842076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8ba14de50990862b328946bd9581a6f2af10fa9720b779cfa54631b722805fc

Aliases

arxiv: 2102.00937 · arxiv_version: 2102.00937v1 · doi: 10.48550/arxiv.2102.00937 · pith_short_12: 7C5BJXSQTEEG · pith_short_16: 7C5BJXSQTEEGFMZI · pith_short_8: 7C5BJXSQ

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/7C5BJXSQTEEGFMZISRV5SWA2N4 \
  | 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: f8ba14de50990862b328946bd9581a6f2af10fa9720b779cfa54631b722805fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73e06fda99415507ec38b7fe479e63963b8df430a7bc718c54404d4fbbc0ed95",
    "cross_cats_sorted": [
      "cs.LG",
      "math.DG",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-02-01T16:12:07Z",
    "title_canon_sha256": "e96d36b87e61980e528fbc9d75ccb5848b832e2186973cebe1d819e9a30be764"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.00937",
    "kind": "arxiv",
    "version": 1
  }
}