Pith Number

pith:X5LJHMHF

pith:2025:X5LJHMHFPWO4BC4K6SBFR7GAZG

not attested not anchored not stored refs pending

Rank-one convexification for quadratic optimization problems with step function penalties

Andres Gomez, Shaoning Han, Soobin Choi, Valentina Cepeda

arxiv:2504.16330 v1 · 2025-04-23 · 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{X5LJHMHFPWO4BC4K6SBFR7GAZG}

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	2026-07-05T10:52:45.022541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf5693b0e57d9dc08b8af48258fcc0c9b23f9c571143d68d4a6a1738900b8bfa

Aliases

arxiv: 2504.16330 · arxiv_version: 2504.16330v1 · doi: 10.48550/arxiv.2504.16330 · pith_short_12: X5LJHMHFPWO4 · pith_short_16: X5LJHMHFPWO4BC4K · pith_short_8: X5LJHMHF

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/X5LJHMHFPWO4BC4K6SBFR7GAZG \
  | 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: bf5693b0e57d9dc08b8af48258fcc0c9b23f9c571143d68d4a6a1738900b8bfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "611635d8e5dc951f0535422b9f808c960cae7c9a0ae4d786f70a37aad7afb426",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-04-23T00:24:48Z",
    "title_canon_sha256": "82904b2722ba3d2a728bfc61e2a6841b4d62220cd2ea621f91e65fccec17b1cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.16330",
    "kind": "arxiv",
    "version": 1
  }
}