Pith Number

pith:Z7WH32WN

pith:2014:Z7WH32WNPKOD5VFLUZTUK3BINZ

not attested not anchored not stored refs pending

Efficient GPU Implementation for Single Block Orthogonal Dictionary Learning

Paul Irofti

arxiv:1412.4944 v1 · 2014-12-16 · cs.CV · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7WH32WNPKOD5VFLUZTUK3BINZ}

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	2026-05-18T02:31:10.047113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfec7deacd7a9c3ed4aba667456c286e4140e68bc47ca311fb978d8fc4d80f67

Aliases

arxiv: 1412.4944 · arxiv_version: 1412.4944v1 · doi: 10.48550/arxiv.1412.4944 · pith_short_12: Z7WH32WNPKOD · pith_short_16: Z7WH32WNPKOD5VFL · pith_short_8: Z7WH32WN

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/Z7WH32WNPKOD5VFLUZTUK3BINZ \
  | 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: cfec7deacd7a9c3ed4aba667456c286e4140e68bc47ca311fb978d8fc4d80f67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40f1825c1fab3cca4b36ede794f589e504deda3d989eec3aca2b7728b61c3689",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-12-16T10:39:23Z",
    "title_canon_sha256": "9cf79d320934d4331cf85a2a8aed042faa2edcc36cf266b41d3637c6c301476d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4944",
    "kind": "arxiv",
    "version": 1
  }
}