Pith Number

pith:TXSM6H67

pith:2012:TXSM6H673V2XXTBKFKVEYBIDTU

not attested not anchored not stored refs pending

Dictionary learning under global sparsity constraint

Deyu Meng, Qian Zhao, Yee Leung, Zongben Xu

arxiv:1202.6562 v2 · 2012-02-29 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TXSM6H673V2XXTBKFKVEYBIDTU}

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	2026-05-18T03:25:59.560858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9de4cf1fdfdd757bcc2a2aaa4c05039d3005136d9057c3eacb012687c68b3136

Aliases

arxiv: 1202.6562 · arxiv_version: 1202.6562v2 · doi: 10.48550/arxiv.1202.6562 · pith_short_12: TXSM6H673V2X · pith_short_16: TXSM6H673V2XXTBK · pith_short_8: TXSM6H67

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/TXSM6H673V2XXTBKFKVEYBIDTU \
  | 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: 9de4cf1fdfdd757bcc2a2aaa4c05039d3005136d9057c3eacb012687c68b3136

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0eddf638872b4b13934c784cf910082f126be486efa9fd4fc40b6a6e6528610",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-02-29T14:56:57Z",
    "title_canon_sha256": "51bf228a06cd2e765592391b2e69fd8bc4dddbe41d02295a98d240fcb8dc11e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6562",
    "kind": "arxiv",
    "version": 2
  }
}