Pith Number

pith:JZKVUQLL

pith:2021:JZKVUQLLLGYJNB2N7ORJIG2FQJ

not attested not anchored not stored refs pending

From the simplex to the sphere: Faster constrained optimization using the Hadamard parametrization

Daniel McKenzie, Qiuwei Li, Wotao Yin

arxiv:2112.05273 v2 · 2021-12-10 · 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{JZKVUQLLLGYJNB2N7ORJIG2FQJ}

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.

Cited by

1 paper in Pith

On Squared-Variable Formulations for Nonlinear Semidefinite programming

Receipt and verification

First computed	2026-07-05T04:52:46.535001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e555a416b59b096874dfba2941b458243c7642f747b620af13f33df555b71aa

Aliases

arxiv: 2112.05273 · arxiv_version: 2112.05273v2 · doi: 10.48550/arxiv.2112.05273 · pith_short_12: JZKVUQLLLGYJ · pith_short_16: JZKVUQLLLGYJNB2N · pith_short_8: JZKVUQLL

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/JZKVUQLLLGYJNB2N7ORJIG2FQJ \
  | 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: 4e555a416b59b096874dfba2941b458243c7642f747b620af13f33df555b71aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f165d4f01b100253e572b835f0e60e6939b4fba83b4d69173d2768e27e9e830",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-12-10T00:54:39Z",
    "title_canon_sha256": "5d3b58e8355ad088f4634ec75de3c80942055b8f51d55d93693c87882dca96bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.05273",
    "kind": "arxiv",
    "version": 2
  }
}