Pith Number

pith:XPEZ2A6W

pith:2020:XPEZ2A6WR7SZYJ6OU44LH5JI7E

not attested not anchored not stored refs pending

Enhance Curvature Information by Structured Stochastic Quasi-Newton Methods

Dong Xu, Hongyu Chen, Mengyun Chen, Minghan Yang, Zaiwen Wen

arxiv:2006.09606 v2 · 2020-06-17 · math.OC · 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{XPEZ2A6WR7SZYJ6OU44LH5JI7E}

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	2026-07-05T02:26:12.312976Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbc99d03d68fe59c27cea738b3f528f90025de5751e0389872c0d0c7ec35e088

Aliases

arxiv: 2006.09606 · arxiv_version: 2006.09606v2 · doi: 10.48550/arxiv.2006.09606 · pith_short_12: XPEZ2A6WR7SZ · pith_short_16: XPEZ2A6WR7SZYJ6O · pith_short_8: XPEZ2A6W

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/XPEZ2A6WR7SZYJ6OU44LH5JI7E \
  | 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: bbc99d03d68fe59c27cea738b3f528f90025de5751e0389872c0d0c7ec35e088

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5654e6b01e48dfcdc0ae66b6fe33217ccde6383698f52444f45c8d799b0f649",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-06-17T02:16:51Z",
    "title_canon_sha256": "75fa167696f380c1e135347ea39c5aa8666414cb427356c86ae88cedfd8af955"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.09606",
    "kind": "arxiv",
    "version": 2
  }
}