Pith Number

pith:XZPY2YGE

pith:2017:XZPY2YGEVML35VEVN4Q65JSOQ3

not attested not anchored not stored refs pending

Convergence of a Scholtes-type Regularization Method for Cardinality-Constrained Optimization Problems with an Application in Sparse Robust Portfolio Optimization

Alexandra Schwartz, Martin Branda, Max Bucher, Michal \v{C}ervinka

arxiv:1703.10637 v1 · 2017-03-30 · 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{XZPY2YGEVML35VEVN4Q65JSOQ3}

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	2026-05-18T00:47:33.104279Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be5f8d60c4ab17bed4956f21eea64e86e058544a4902337bc272e63933e74459

Aliases

arxiv: 1703.10637 · arxiv_version: 1703.10637v1 · doi: 10.48550/arxiv.1703.10637 · pith_short_12: XZPY2YGEVML3 · pith_short_16: XZPY2YGEVML35VEV · pith_short_8: XZPY2YGE

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/XZPY2YGEVML35VEVN4Q65JSOQ3 \
  | 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: be5f8d60c4ab17bed4956f21eea64e86e058544a4902337bc272e63933e74459

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "003342b3038f39fdbd2d06d25c0989b84de4914acec64e7e60b6040d49a0ef09",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-03-30T18:49:26Z",
    "title_canon_sha256": "c3a6113408122efd83ad73487111685ce497921a112f39e753f965684b3ce9fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.10637",
    "kind": "arxiv",
    "version": 1
  }
}