Pith Number

pith:QLROKANZ

pith:2012:QLROKANZVDGJG6L2HTYNQEIYKA

not attested not anchored not stored refs pending

PETRELS: Parallel Subspace Estimation and Tracking by Recursive Least Squares from Partial Observations

Robert Calderbank, Yonina C. Eldar, Yuejie Chi

arxiv:1207.6353 v2 · 2012-07-26 · stat.ME · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QLROKANZVDGJG6L2HTYNQEIYKA}

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	2026-05-18T01:56:06.945648Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82e2e501b9a8cc93797a3cf0d81118500ba14917e553057f4c4de929fab8674f

Aliases

arxiv: 1207.6353 · arxiv_version: 1207.6353v2 · doi: 10.48550/arxiv.1207.6353 · pith_short_12: QLROKANZVDGJ · pith_short_16: QLROKANZVDGJG6L2 · pith_short_8: QLROKANZ

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/QLROKANZVDGJG6L2HTYNQEIYKA \
  | 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: 82e2e501b9a8cc93797a3cf0d81118500ba14917e553057f4c4de929fab8674f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a12634ab410219e7c94939032071400e5f694b85ee9aa041d19b24083224b28",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2012-07-26T18:02:40Z",
    "title_canon_sha256": "2f479f648684c0bd5531c7cca19f5dc1a23d64ddd7b90cda2f696e56ff383232"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6353",
    "kind": "arxiv",
    "version": 2
  }
}