Pith Number

pith:X23RD3D6

pith:2022:X23RD3D63NK33JCLCX4PDUYKOJ

not attested not anchored not stored refs pending

A regularized Newton method for $\ell_q$-norm composite optimization problems

Shaohua Pan, Xiaoqi Yang, Yuqia Wu

arxiv:2203.02957 v2 · 2022-03-06 · 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{X23RD3D63NK33JCLCX4PDUYKOJ}

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	2026-07-05T06:24:23.304849Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

beb711ec7edb55bda44b15f8f1d30a724d982f8e444c64aceb1ea9d0091d91fe

Aliases

arxiv: 2203.02957 · arxiv_version: 2203.02957v2 · doi: 10.48550/arxiv.2203.02957 · pith_short_12: X23RD3D63NK3 · pith_short_16: X23RD3D63NK33JCL · pith_short_8: X23RD3D6

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/X23RD3D63NK33JCLCX4PDUYKOJ \
  | 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: beb711ec7edb55bda44b15f8f1d30a724d982f8e444c64aceb1ea9d0091d91fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dbbb1f96dd9366263aff8aee21e2f9137723e115f32582323c5f90407b8e4c5f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-03-06T13:00:30Z",
    "title_canon_sha256": "fb437dc57142e80465463e59d899bf1d3ef590d785e329ef3f94ad911e961e81"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.02957",
    "kind": "arxiv",
    "version": 2
  }
}