Pith Number

pith:3FSURGPO

pith:2018:3FSURGPO4ZVKWRRWTP6OBXWJV5

not attested not anchored not stored refs pending

Learning Hybrid Sparsity Prior for Image Restoration: Where Deep Learning Meets Sparse Coding

Fangfang Wu, Guangming Shi, Weisheng Dong, Xin Li

arxiv:1807.06920 v2 · 2018-07-18 · eess.IV · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FSURGPO4ZVKWRRWTP6OBXWJV5}

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	2026-05-17T23:59:43.499835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9654899eee66aab46369bfce0dec9af5438abb7fea51fd34555be4180866fd2

Aliases

arxiv: 1807.06920 · arxiv_version: 1807.06920v2 · doi: 10.48550/arxiv.1807.06920 · pith_short_12: 3FSURGPO4ZVK · pith_short_16: 3FSURGPO4ZVKWRRW · pith_short_8: 3FSURGPO

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/3FSURGPO4ZVKWRRWTP6OBXWJV5 \
  | 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: d9654899eee66aab46369bfce0dec9af5438abb7fea51fd34555be4180866fd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "090dbbf273bf651dfc8448083fe0f16f2dbd059a0f62fd4b6a62dd1e0357a4b2",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2018-07-18T13:33:02Z",
    "title_canon_sha256": "ae3511940717ed0048f93053a7a36100a95892f065fc9ff862a0699a9252bce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06920",
    "kind": "arxiv",
    "version": 2
  }
}