Pith Number

pith:BC4PYX6Z

pith:2025:BC4PYX6ZREZM5ZFRF2CVSH3URL

not attested not anchored not stored refs pending

Spectral Outer-Approximation Algorithms for Binary Semidefinite Problems

Daniel de Roux, David E. Bernal Neira, Zedong Peng

arxiv:2506.18265 v1 · 2025-06-23 · 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{BC4PYX6ZREZM5ZFRF2CVSH3URL}

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	2026-07-05T11:25:47.264161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08b8fc5fd98932cee4b12e85591f748adc03a33aec5f76417e8a5c913b892619

Aliases

arxiv: 2506.18265 · arxiv_version: 2506.18265v1 · doi: 10.48550/arxiv.2506.18265 · pith_short_12: BC4PYX6ZREZM · pith_short_16: BC4PYX6ZREZM5ZFR · pith_short_8: BC4PYX6Z

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/BC4PYX6ZREZM5ZFRF2CVSH3URL \
  | 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: 08b8fc5fd98932cee4b12e85591f748adc03a33aec5f76417e8a5c913b892619

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7f713ff579491f57c2ee3cae8102517b8e4b519606a0acbb048568359e49409",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-06-23T03:42:54Z",
    "title_canon_sha256": "6533ea0cd6f2344c07c6f2f93b8797d23c5efd72ab581a1b5e5eadd5ba26ef82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.18265",
    "kind": "arxiv",
    "version": 1
  }
}