Pith Number

pith:XKDQCBRX

pith:2019:XKDQCBRX3P4YA36LC6SDGGLPQW

not attested not anchored not stored refs pending

Dictionary Learning Using Rank-One Projection (ROP)

Cheng cheng, Wei Dai

arxiv:1911.08975 v1 · 2019-11-20 · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XKDQCBRX3P4YA36LC6SDGGLPQW}

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	2026-07-05T00:20:48.447015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba87010637dbf9806fcb17a433196f8588926951e594c6bb44c8400a2a24e1ee

Aliases

arxiv: 1911.08975 · arxiv_version: 1911.08975v1 · doi: 10.48550/arxiv.1911.08975 · pith_short_12: XKDQCBRX3P4Y · pith_short_16: XKDQCBRX3P4YA36L · pith_short_8: XKDQCBRX

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/XKDQCBRX3P4YA36LC6SDGGLPQW \
  | 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: ba87010637dbf9806fcb17a433196f8588926951e594c6bb44c8400a2a24e1ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8434bf08d97ae12270eb601359b4fe845bba9dc818d979fb27f096f89523969c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2019-11-20T15:41:35Z",
    "title_canon_sha256": "8f0635146f177c38fd907af0b898ab203b8e751afb59c208507349a613d44599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.08975",
    "kind": "arxiv",
    "version": 1
  }
}