Pith Number

pith:F44UB3MR

pith:2018:F44UB3MR63QSUVOLEIEUAYFBYD

not attested not anchored not stored refs pending

A Local Block Coordinate Descent Algorithm for the Convolutional Sparse Coding Model

Ev Zisselman, Jeremias Sulam, Michael Elad

arxiv:1811.00312 v1 · 2018-11-01 · 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{F44UB3MR63QSUVOLEIEUAYFBYD}

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	2026-05-18T00:01:46.785195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f3940ed91f6e12a55cb22094060a1c0c6efe24e8fe12da09bb34aab23f18992

Aliases

arxiv: 1811.00312 · arxiv_version: 1811.00312v1 · doi: 10.48550/arxiv.1811.00312 · pith_short_12: F44UB3MR63QS · pith_short_16: F44UB3MR63QSUVOL · pith_short_8: F44UB3MR

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/F44UB3MR63QSUVOLEIEUAYFBYD \
  | 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: 2f3940ed91f6e12a55cb22094060a1c0c6efe24e8fe12da09bb34aab23f18992

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ccab534b26026859dbbb398a38d4770a21d1da97bc046bf40c004ca030e2567",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-11-01T11:02:38Z",
    "title_canon_sha256": "e8fa8d3be79fbc3a3ea51b46e0f7f1ba702eb77e0dc87f09228e268ec84c8e7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00312",
    "kind": "arxiv",
    "version": 1
  }
}