Pith Number

pith:FJWDORZR

pith:2013:FJWDORZREGVRI6RVYWCM4CN7GD

not attested not anchored not stored refs pending

Recursive Robust PCA or Recursive Sparse Recovery in Large but Structured Noise (parts 1 and 2 combined)

Brian Lois, Chenlu Qiu, Leslie Hogben, Namrata Vaswani

arxiv:1312.5641 v3 · 2013-12-19 · 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{FJWDORZREGVRI6RVYWCM4CN7GD}

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	2026-05-18T02:55:27.312897Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a6c37473121ab147a35c584ce09bf30fe5c1843327f53ed9925cdd37cca60ff

Aliases

arxiv: 1312.5641 · arxiv_version: 1312.5641v3 · doi: 10.48550/arxiv.1312.5641 · pith_short_12: FJWDORZREGVR · pith_short_16: FJWDORZREGVRI6RV · pith_short_8: FJWDORZR

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/FJWDORZREGVRI6RVYWCM4CN7GD \
  | 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: 2a6c37473121ab147a35c584ce09bf30fe5c1843327f53ed9925cdd37cca60ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec0fe623ac0304cf8d1c4abd4ff77215922b85106b583625e69aec24a3f1bb00",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-12-19T17:07:57Z",
    "title_canon_sha256": "2b97707f840496ba80622ce8d3a4f78678b1fd0a3e45f65180a1182604f0762d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.5641",
    "kind": "arxiv",
    "version": 3
  }
}