Pith Number

pith:QUQRBSZD

pith:2015:QUQRBSZD7U6KKOJ6CZYQZXMPQ2

not attested not anchored not stored refs pending

Improving M-SBL for Joint Sparse Recovery using a Subspace Penalty

Jong Chul Ye, Jong Min Kim, Yoram Bresler

arxiv:1503.06679 v2 · 2015-03-23 · 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{QUQRBSZD7U6KKOJ6CZYQZXMPQ2}

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	2026-05-18T01:22:40.855110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

852110cb23fd3ca5393e16710cdd8f86a5e4cda5b8a54b4b8be176296b5711cd

Aliases

arxiv: 1503.06679 · arxiv_version: 1503.06679v2 · doi: 10.48550/arxiv.1503.06679 · pith_short_12: QUQRBSZD7U6K · pith_short_16: QUQRBSZD7U6KKOJ6 · pith_short_8: QUQRBSZD

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/QUQRBSZD7U6KKOJ6CZYQZXMPQ2 \
  | 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: 852110cb23fd3ca5393e16710cdd8f86a5e4cda5b8a54b4b8be176296b5711cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77305d65d1554dece4d10b182b09358f9a49febd6594501f84be0e7552205403",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-03-23T15:15:11Z",
    "title_canon_sha256": "a4d5327da27c9c6cf0d095af7545df02c320893f8a837c455b086c040e81a152"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.06679",
    "kind": "arxiv",
    "version": 2
  }
}