Pith Number

pith:FBGF2YXA

pith:2013:FBGF2YXAQU2SIVLEOGRSXSBH3Q

not attested not anchored not stored refs pending

Low-rank optimization for distance matrix completion

B. Mishra, G. Meyer, R. Sepulchre

arxiv:1304.6663 v2 · 2013-04-24 · math.OC · 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{FBGF2YXAQU2SIVLEOGRSXSBH3Q}

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	2026-05-18T03:27:11.034199Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

284c5d62e0853524556471a32bc827dc33adc4960c4209bddc1a70400f174bc0

Aliases

arxiv: 1304.6663 · arxiv_version: 1304.6663v2 · doi: 10.48550/arxiv.1304.6663 · pith_short_12: FBGF2YXAQU2S · pith_short_16: FBGF2YXAQU2SIVLE · pith_short_8: FBGF2YXA

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/FBGF2YXAQU2SIVLEOGRSXSBH3Q \
  | 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: 284c5d62e0853524556471a32bc827dc33adc4960c4209bddc1a70400f174bc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c60ea33e9d0d3ec03d50644b075fd49e19eab68e55c6356f8a86ff225e2c579",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-04-24T16:52:34Z",
    "title_canon_sha256": "999e67d0d5a61f8fad8d64e8ef62da31dc6e4771f01238414c902dffb690fb29"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.6663",
    "kind": "arxiv",
    "version": 2
  }
}