Pith Number

pith:RHLDB6BH

pith:2023:RHLDB6BHWZ2HIDDQSTCNK7BKZ4

not attested not anchored not stored refs pending

Efficient Solution of Portfolio Optimization Problems via Dimension Reduction and Sparsification

Cassidy K. Buhler, Hande Y. Benson

arxiv:2306.12639 v1 · 2023-06-22 · q-fin.PM · 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{RHLDB6BHWZ2HIDDQSTCNK7BKZ4}

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	2026-07-05T06:23:40.938005Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89d630f827b674740c7094c4d57c2acf1b9b13775555a1e20b264d60e7991ff3

Aliases

arxiv: 2306.12639 · arxiv_version: 2306.12639v1 · doi: 10.48550/arxiv.2306.12639 · pith_short_12: RHLDB6BHWZ2H · pith_short_16: RHLDB6BHWZ2HIDDQ · pith_short_8: RHLDB6BH

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/RHLDB6BHWZ2HIDDQSTCNK7BKZ4 \
  | 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: 89d630f827b674740c7094c4d57c2acf1b9b13775555a1e20b264d60e7991ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5baec5da069149deeb7ed3fed4ff01e8b0e542ac453d16b669517d813c82947c",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-fin.PM",
    "submitted_at": "2023-06-22T02:46:32Z",
    "title_canon_sha256": "4e02c829c458ebc7f76918e9b2149e59b73649e2ec29e172018cba8080da9ff8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2306.12639",
    "kind": "arxiv",
    "version": 1
  }
}