Pith Number

pith:WXFJ5VHE

pith:2021:WXFJ5VHEJS24TXH4UHAMJAUZ2Z

not attested not anchored not stored refs pending

Dictionary Learning with Convex Update (ROMD)

Cheng cheng, Wei Dai

arxiv:2110.06641 v2 · 2021-10-13 · eess.SP · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WXFJ5VHEJS24TXH4UHAMJAUZ2Z}

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	2026-07-05T03:25:17.900287Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5ca9ed4e44cb5c9dcfca1c0c48299d670c4c5f5825431e954b1a9d89f516255

Aliases

arxiv: 2110.06641 · arxiv_version: 2110.06641v2 · doi: 10.48550/arxiv.2110.06641 · pith_short_12: WXFJ5VHEJS24 · pith_short_16: WXFJ5VHEJS24TXH4 · pith_short_8: WXFJ5VHE

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/WXFJ5VHEJS24TXH4UHAMJAUZ2Z \
  | 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: b5ca9ed4e44cb5c9dcfca1c0c48299d670c4c5f5825431e954b1a9d89f516255

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b48aa313147ea29c2bbd68ee4d845fae6c5be1693713a9f5f787045f205a4bf7",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2021-10-13T11:14:38Z",
    "title_canon_sha256": "a90c95a60fb2a55c635f80ce5cb06207c6d2b476cf972a11b94fcc14575757b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.06641",
    "kind": "arxiv",
    "version": 2
  }
}