Pith Number

pith:VACNYS6N

pith:2015:VACNYS6N6UD7BKXABLG2V4H6IW

not attested not anchored not stored refs pending

A Batchwise Monotone Algorithm for Dictionary Learning

Daniel Spielman, Huan Wang, John Wright

arxiv:1502.00064 v1 · 2015-01-31 · 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{VACNYS6N6UD7BKXABLG2V4H6IW}

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	2026-05-18T02:28:12.891628Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a804dc4bcdf507f0aae00acdaaf0fe458c8362196abaa1f43c32342aac8d4b3a

Aliases

arxiv: 1502.00064 · arxiv_version: 1502.00064v1 · doi: 10.48550/arxiv.1502.00064 · pith_short_12: VACNYS6N6UD7 · pith_short_16: VACNYS6N6UD7BKXA · pith_short_8: VACNYS6N

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/VACNYS6N6UD7BKXABLG2V4H6IW \
  | 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: a804dc4bcdf507f0aae00acdaaf0fe458c8362196abaa1f43c32342aac8d4b3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3983ac25ae41abb5fd573fce085bd46e7c51a23b194c31f55c53b383553941f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-01-31T03:40:17Z",
    "title_canon_sha256": "db4554bd145426c6b88c47fd9a3a44a968f6130efad61312914f1683a1e0ac59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.00064",
    "kind": "arxiv",
    "version": 1
  }
}