Pith Number

pith:IKW5T7K4

pith:2014:IKW5T7K4U2FAMECALUS4TSMBUV

not attested not anchored not stored refs pending

An Incidence Geometry approach to Dictionary Learning

Meera Sitharam, Menghan Wang, Mohamad Tarifi

arxiv:1402.7344 v2 · 2014-02-28 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IKW5T7K4U2FAMECALUS4TSMBUV}

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	2026-05-18T02:25:32.724482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42add9fd5ca68a0610405d25c9c981a56cb248fe0d76253eef9cc6f298d73224

Aliases

arxiv: 1402.7344 · arxiv_version: 1402.7344v2 · doi: 10.48550/arxiv.1402.7344 · pith_short_12: IKW5T7K4U2FA · pith_short_16: IKW5T7K4U2FAMECA · pith_short_8: IKW5T7K4

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/IKW5T7K4U2FAMECALUS4TSMBUV \
  | 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: 42add9fd5ca68a0610405d25c9c981a56cb248fe0d76253eef9cc6f298d73224

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "444c10aa53602e2309a084ad09d9c209054fa64c40577e8e54a5b5ff918f7045",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2014-02-28T18:54:07Z",
    "title_canon_sha256": "8ee0ad9931b505805b253dbfb67990e7b7b196de6a6b8ea33ea5cc39b95d3926"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.7344",
    "kind": "arxiv",
    "version": 2
  }
}