Pith Number

pith:GUQHU7CU

pith:2019:GUQHU7CUVABJURR7BTKXB6Z5ET

not attested not anchored not stored refs pending

Quasi-Newton Methods for Machine Learning: Forget the Past, Just Sample

Albert S. Berahas, Majid Jahani, Martin Tak\'a\v{c}, Peter Richt\'arik

arxiv:1901.09997 v5 · 2019-01-28 · math.OC · 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{GUQHU7CUVABJURR7BTKXB6Z5ET}

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	2026-07-05T03:01:20.145444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35207a7c54a8029a463f0cd570fb3d24ee80c62312788d1a56fbdf9fb121e02b

Aliases

arxiv: 1901.09997 · arxiv_version: 1901.09997v5 · doi: 10.48550/arxiv.1901.09997 · pith_short_12: GUQHU7CUVABJ · pith_short_16: GUQHU7CUVABJURR7 · pith_short_8: GUQHU7CU

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/GUQHU7CUVABJURR7BTKXB6Z5ET \
  | 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: 35207a7c54a8029a463f0cd570fb3d24ee80c62312788d1a56fbdf9fb121e02b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6be15c1634020b24a5573c89b34c9a5bd19e0aa304b5f6f761c708690d007532",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2019-01-28T20:47:18Z",
    "title_canon_sha256": "16ad633f4518c6f2f14c34a2641e1778836bae4ba89ba7b9e30ccdc290cd64aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09997",
    "kind": "arxiv",
    "version": 5
  }
}