Pith Number

pith:CMPZXRGS

pith:2025:CMPZXRGSFY7PWBBV2UOTQZM23Q

not attested not anchored not stored refs pending

rDSM -- A robust Downhill Simplex Method software package for optimization problems in high dimensions

Bernd R. Noack, Tianyu Wang, Xiaozhou He

arxiv:2509.05917 v1 · 2025-09-07 · 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{CMPZXRGSFY7PWBBV2UOTQZM23Q}

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	2026-07-05T12:06:26.420796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

131f9bc4d22e3efb0435d51d38659adc3ad771312d7b31d0d931521d4613644e

Aliases

arxiv: 2509.05917 · arxiv_version: 2509.05917v1 · doi: 10.48550/arxiv.2509.05917 · pith_short_12: CMPZXRGSFY7P · pith_short_16: CMPZXRGSFY7PWBBV · pith_short_8: CMPZXRGS

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/CMPZXRGSFY7PWBBV2UOTQZM23Q \
  | 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: 131f9bc4d22e3efb0435d51d38659adc3ad771312d7b31d0d931521d4613644e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb72d0a46f00079e4039597b6f71d24faaec2b97281bed7b9fc58b86b928bbf3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2025-09-07T04:24:53Z",
    "title_canon_sha256": "7f0e088f1af9a2f440de3a0f4f76ce95737a20e20507a98e4713203784221fa3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.05917",
    "kind": "arxiv",
    "version": 1
  }
}