Pith Number

pith:TMSQRBGD

pith:2016:TMSQRBGDR7MMQTIUDHBEN3NKPM

not attested not anchored not stored refs pending

Efficient Dictionary Learning with Sparseness-Enforcing Projections

G\"unther Palm, Markus Thom, Matthias Rapp

arxiv:1604.04767 v1 · 2016-04-16 · cs.LG · cs.CV · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TMSQRBGDR7MMQTIUDHBEN3NKPM}

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	2026-05-18T01:16:58.610845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b250884c38fd8c84d1419c246edaa7b3322585a85ad5441338fdfe4f4224008

Aliases

arxiv: 1604.04767 · arxiv_version: 1604.04767v1 · doi: 10.48550/arxiv.1604.04767 · pith_short_12: TMSQRBGDR7MM · pith_short_16: TMSQRBGDR7MMQTIU · pith_short_8: TMSQRBGD

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/TMSQRBGDR7MMQTIUDHBEN3NKPM \
  | 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: 9b250884c38fd8c84d1419c246edaa7b3322585a85ad5441338fdfe4f4224008

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d17b11a1c7062853c773cfcb6c5bbdad8465282a9143973302396c34c4a1c838",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-04-16T15:42:12Z",
    "title_canon_sha256": "772f3fe4021cf233ec5e51ae5b3c8bf28b9e775796b7c73cf79371d3ada69b6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.04767",
    "kind": "arxiv",
    "version": 1
  }
}