Pith Number

pith:HTZZDR2K

pith:2012:HTZZDR2KVL6COIYEO62UICN2SH

not attested not anchored not stored refs pending

Robust PCA and subspace tracking from incomplete observations using L0-surrogates

Clemens Hage, Martin Kleinsteuber

arxiv:1210.0805 v2 · 2012-10-02 · 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{HTZZDR2KVL6COIYEO62UICN2SH}

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	2026-05-18T03:36:15.843596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cf391c74aaafc27230477b54409ba91f4e390621b3bac1e9c53b6727ca3b8c8

Aliases

arxiv: 1210.0805 · arxiv_version: 1210.0805v2 · doi: 10.48550/arxiv.1210.0805 · pith_short_12: HTZZDR2KVL6C · pith_short_16: HTZZDR2KVL6COIYE · pith_short_8: HTZZDR2K

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/HTZZDR2KVL6COIYEO62UICN2SH \
  | 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: 3cf391c74aaafc27230477b54409ba91f4e390621b3bac1e9c53b6727ca3b8c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80ceb6172577220b731d9d26b1754a01c64540b47b405c50cedfdb1d00e7c3d6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-10-02T15:26:15Z",
    "title_canon_sha256": "718d2d2bfcbebb40cebec5e305633c53f9f1f7bd28b97189ecca817edbc42d6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.0805",
    "kind": "arxiv",
    "version": 2
  }
}