Pith Number

pith:L6JGL6NV

pith:2025:L6JGL6NVYQAHL47NIDGCWYKASL

not attested not anchored not stored refs pending

qNBO: quasi-Newton Meets Bilevel Optimization

Chengming Yu, Jin Zhang, Sheng Fang, Wei Yao, Yong-jin Liu

arxiv:2502.01076 v1 · 2025-02-03 · cs.LG · 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{L6JGL6NVYQAHL47NIDGCWYKASL}

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	2026-07-05T10:08:42.596366Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f9265f9b5c40075f3ed40cc2b614092f33f6a1f1990babf3d9da6d4a40fac86

Aliases

arxiv: 2502.01076 · arxiv_version: 2502.01076v1 · doi: 10.48550/arxiv.2502.01076 · pith_short_12: L6JGL6NVYQAH · pith_short_16: L6JGL6NVYQAHL47N · pith_short_8: L6JGL6NV

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/L6JGL6NVYQAHL47NIDGCWYKASL \
  | 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: 5f9265f9b5c40075f3ed40cc2b614092f33f6a1f1990babf3d9da6d4a40fac86

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b0d27c165d5b7248c1896c52a83b7301a320f9e2e28b85eb40753ed8c9c0da5",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-02-03T05:36:45Z",
    "title_canon_sha256": "9a47dd4fcce363d3e266eb66d3918ffd503944fd5df28f84de53454b5b818577"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.01076",
    "kind": "arxiv",
    "version": 1
  }
}