Pith Number

pith:G6F6WP32

pith:2022:G6F6WP32BLBV3GTUNFGQNF7BYO

not attested not anchored not stored refs pending

Tighter Bound Estimation for Efficient Biquadratic Optimization Over Unit Spheres

Delu Zeng, Linzhang Lu, Shigui Li, Xing Qiu, Zhen Chen

arxiv:2207.11734 v5 · 2022-07-24 · math.NA · cs.NA · 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{G6F6WP32BLBV3GTUNFGQNF7BYO}

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	2026-07-05T04:50:01.908814Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

378beb3f7a0ac35d9a74694d0697e1c38ced445b849558ca92b834de6daf6294

Aliases

arxiv: 2207.11734 · arxiv_version: 2207.11734v5 · doi: 10.48550/arxiv.2207.11734 · pith_short_12: G6F6WP32BLBV · pith_short_16: G6F6WP32BLBV3GTU · pith_short_8: G6F6WP32

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/G6F6WP32BLBV3GTUNFGQNF7BYO \
  | 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: 378beb3f7a0ac35d9a74694d0697e1c38ced445b849558ca92b834de6daf6294

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fdafed5bd9c16bfc4d727bfa2eaa3ddd0307f088d96732e1dd888bb2c61040a7",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-07-24T12:56:35Z",
    "title_canon_sha256": "e20814935bd58bbfa8a281cd8ebc9645723935108872115c5b5331212bcb1a39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.11734",
    "kind": "arxiv",
    "version": 5
  }
}