Pith Number

pith:OZCB6H2C

pith:2015:OZCB6H2CWEPEZN5BUNKC4DHGWN

not attested not anchored not stored refs pending

Beyond Low Rank + Sparse: Multi-scale Low Rank Matrix Decomposition

Frank Ong, Michael Lustig

arxiv:1507.08751 v3 · 2015-07-31 · cs.SY · cs.IT · cs.NA · math.IT · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OZCB6H2CWEPEZN5BUNKC4DHGWN}

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	2026-05-18T01:09:57.929044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76441f1f42b11e4cb7a1a3542e0ce6b36087f99a45e1e6d5027a12ec236658ad

Aliases

arxiv: 1507.08751 · arxiv_version: 1507.08751v3 · doi: 10.48550/arxiv.1507.08751 · pith_short_12: OZCB6H2CWEPE · pith_short_16: OZCB6H2CWEPEZN5B · pith_short_8: OZCB6H2C

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/OZCB6H2CWEPEZN5BUNKC4DHGWN \
  | 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: 76441f1f42b11e4cb7a1a3542e0ce6b36087f99a45e1e6d5027a12ec236658ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b647ef91393e97de83bd5980b4b6af09dcfa107e9734f01fca027f34e374a9b1",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.NA",
      "math.IT",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SY",
    "submitted_at": "2015-07-31T04:46:25Z",
    "title_canon_sha256": "370df9572228b54cef914a51c39b80329b89e56eec225d5e9b7113dcb17e73ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.08751",
    "kind": "arxiv",
    "version": 3
  }
}