Pith Number

pith:TFLZONLH

pith:2019:TFLZONLHO2U7FPYI3PQGQJNWM5

not attested not anchored not stored refs pending

From Group Sparse Coding to Rank Minimization: A Novel Denoising Model for Low-level Image Restoration

Guan Gui, Xiefeng Cheng, Yunyi Li

arxiv:1907.04699 v3 · 2019-07-10 · eess.IV · cs.LG · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TFLZONLHO2U7FPYI3PQGQJNWM5}

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	2026-07-05T01:05:09.441365Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

995797356776a9f2bf08dbe06825b6674592bb2f4e6d7fa40d6ca157502d42d5

Aliases

arxiv: 1907.04699 · arxiv_version: 1907.04699v3 · doi: 10.48550/arxiv.1907.04699 · pith_short_12: TFLZONLHO2U7 · pith_short_16: TFLZONLHO2U7FPYI · pith_short_8: TFLZONLH

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/TFLZONLHO2U7FPYI3PQGQJNWM5 \
  | 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: 995797356776a9f2bf08dbe06825b6674592bb2f4e6d7fa40d6ca157502d42d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b011f5888b62a418f629678bd7bb502bfe9743a341cc7bc64dddd1e926faa30",
    "cross_cats_sorted": [
      "cs.LG",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-07-10T13:10:27Z",
    "title_canon_sha256": "a846c00b88c0ace8ec25df14b699a2c132099fde4bbb1f713c56db82d96b14b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04699",
    "kind": "arxiv",
    "version": 3
  }
}