Pith Number

pith:JJZQGBGK

pith:2020:JJZQGBGKZSTWRSAMUPZ5YDOQBO

not attested not anchored not stored refs pending

Fast Linear Convergence of Randomized BFGS

Alexander Rogozin, Dmitry Kovalev, Peter Richt\'arik, Robert M. Gower

arxiv:2002.11337 v4 · 2020-02-26 · math.OC · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JJZQGBGKZSTWRSAMUPZ5YDOQBO}

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	2026-07-05T02:12:40.588155Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a730304cacca768c80ca3f3dc0dd00b907bc87b4fce41ec2503497120ee33ee

Aliases

arxiv: 2002.11337 · arxiv_version: 2002.11337v4 · doi: 10.48550/arxiv.2002.11337 · pith_short_12: JJZQGBGKZSTW · pith_short_16: JJZQGBGKZSTWRSAM · pith_short_8: JJZQGBGK

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/JJZQGBGKZSTWRSAMUPZ5YDOQBO \
  | 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: 4a730304cacca768c80ca3f3dc0dd00b907bc87b4fce41ec2503497120ee33ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "185c949c526ed3acf2c3926c80e0da3a0fba275aa1e3d4059e222495dd6e4c41",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-02-26T07:50:28Z",
    "title_canon_sha256": "ef59cb87fed9e4b04049a02186d5362877edbb816758ff3a99228f12789c0f36"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.11337",
    "kind": "arxiv",
    "version": 4
  }
}