Pith Number

pith:4WQ3ENTI

pith:2016:4WQ3ENTIU2EBYOSYLNNW7K6AXO

not attested not anchored not stored refs pending

Stochastic Block BFGS: Squeezing More Curvature out of Data

Donald Goldfarb, Peter Richt\'arik, Robert M. Gower

arxiv:1603.09649 v1 · 2016-03-31 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4WQ3ENTIU2EBYOSYLNNW7K6AXO}

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	2026-05-18T01:17:57.990942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5a1b23668a6881c3a585b5b6fabc0bb8876036140cc9101a10652a820be28ff

Aliases

arxiv: 1603.09649 · arxiv_version: 1603.09649v1 · doi: 10.48550/arxiv.1603.09649 · pith_short_12: 4WQ3ENTIU2EB · pith_short_16: 4WQ3ENTIU2EBYOSY · pith_short_8: 4WQ3ENTI

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/4WQ3ENTIU2EBYOSYLNNW7K6AXO \
  | 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: e5a1b23668a6881c3a585b5b6fabc0bb8876036140cc9101a10652a820be28ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b99894d5b6e4c632410228b6c7be6b7008d215a61b4ee33a0830fa63e681d40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2016-03-31T15:47:43Z",
    "title_canon_sha256": "96b17ae2a3fd559159a85e1685476e7f0255f57b86981e6cc68c0a554adf8d81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.09649",
    "kind": "arxiv",
    "version": 1
  }
}