Pith Number

pith:6RQDEFKM

pith:2012:6RQDEFKMSDWIWL24KGP7GYSCSS

not attested not anchored not stored refs pending

Low-rank matrix completion by Riemannian optimization---extended version

Bart Vandereycken

arxiv:1209.3834 v1 · 2012-09-18 · math.OC · math.DG · math.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{6RQDEFKMSDWIWL24KGP7GYSCSS}

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	2026-05-18T03:45:22.400666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f46032154c90ec8b2f5c519ff3624294a8d1eb0c90b08f3fe75f4b6ec400cfbd

Aliases

arxiv: 1209.3834 · arxiv_version: 1209.3834v1 · doi: 10.48550/arxiv.1209.3834 · pith_short_12: 6RQDEFKMSDWI · pith_short_16: 6RQDEFKMSDWIWL24 · pith_short_8: 6RQDEFKM

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/6RQDEFKMSDWIWL24KGP7GYSCSS \
  | 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: f46032154c90ec8b2f5c519ff3624294a8d1eb0c90b08f3fe75f4b6ec400cfbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b313e541e7a098cba6cb52eb2a79640c7b7294f31279d98a97396bcacfad9591",
    "cross_cats_sorted": [
      "math.DG",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-09-18T03:21:58Z",
    "title_canon_sha256": "cd44ef75337ac413fa3b93726fb6122b0ebc10c0794ca4ae7b82a6cd0bf79982"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3834",
    "kind": "arxiv",
    "version": 1
  }
}