Pith Number

pith:4COOMNVB

pith:2013:4COOMNVBKQCNHUTJOYAUOCYGPQ

not attested not anchored not stored refs pending

R3MC: A Riemannian three-factor algorithm for low-rank matrix completion

B. Mishra, R. Sepulchre

arxiv:1306.2672 v2 · 2013-06-11 · math.OC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4COOMNVBKQCNHUTJOYAUOCYGPQ}

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	2026-05-18T02:42:26.005094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e09ce636a15404d3d2697601470b067c038b18bdb6ff302507d5bab4c3880464

Aliases

arxiv: 1306.2672 · arxiv_version: 1306.2672v2 · doi: 10.48550/arxiv.1306.2672 · pith_short_12: 4COOMNVBKQCN · pith_short_16: 4COOMNVBKQCNHUTJ · pith_short_8: 4COOMNVB

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/4COOMNVBKQCNHUTJOYAUOCYGPQ \
  | 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: e09ce636a15404d3d2697601470b067c038b18bdb6ff302507d5bab4c3880464

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "409374e58e2f7536475ff2626f30568ccd45dbf514378497b5c9c4273581324b",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-06-11T22:42:21Z",
    "title_canon_sha256": "5d13c84cc2021bf91128ad95464b505a427fa67766b2163404a8f79ee7bb26b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2672",
    "kind": "arxiv",
    "version": 2
  }
}