Pith Number

pith:5QFQMEOP

pith:2013:5QFQMEOP4KWIXF3YI4TWTCFAOI

not attested not anchored not stored refs pending

Image restoration using sparse approximations of spatially varying blur operators in the wavelet domain

Francois Malgouyres (IMT), Paul Escande (ITAV), Pierre Weiss (ITAV)

arxiv:1302.6105 v2 · 2013-02-25 · math.OC · cs.CV · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5QFQMEOP4KWIXF3YI4TWTCFAOI}

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	2026-05-18T01:51:28.898506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec0b0611cfe2ac8b977847276988a0723f673359296e83aafbe4d7925e13b840

Aliases

arxiv: 1302.6105 · arxiv_version: 1302.6105v2 · doi: 10.48550/arxiv.1302.6105 · pith_short_12: 5QFQMEOP4KWI · pith_short_16: 5QFQMEOP4KWIXF3Y · pith_short_8: 5QFQMEOP

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/5QFQMEOP4KWIXF3YI4TWTCFAOI \
  | 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: ec0b0611cfe2ac8b977847276988a0723f673359296e83aafbe4d7925e13b840

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f7379350935470fee24e6a050e82d49f0fa06af228eb32ae8da0cf285e9bae4",
    "cross_cats_sorted": [
      "cs.CV",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-02-25T14:36:33Z",
    "title_canon_sha256": "a0b2df11608aff16e5c1df2aec9af35c5b3cf783936788ca75b531e456e97cb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6105",
    "kind": "arxiv",
    "version": 2
  }
}