Pith Number

pith:ZKMPRCE5

pith:2018:ZKMPRCE542CRDFBCZYRNFJW6L6

not attested not anchored not stored refs pending

optimParallel: an R Package Providing Parallel Versions of the Gradient-Based Optimization Methods of optim()

Florian Gerber, Reinhard Furrer

arxiv:1804.11058 v1 · 2018-04-30 · stat.CO

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKMPRCE542CRDFBCZYRNFJW6L6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:17:14.751212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca98f8889de685119422ce22d2a6de5fa9b3425eccd62860f8caf7becbc4f663

Aliases

arxiv: 1804.11058 · arxiv_version: 1804.11058v1 · doi: 10.48550/arxiv.1804.11058 · pith_short_12: ZKMPRCE542CR · pith_short_16: ZKMPRCE542CRDFBC · pith_short_8: ZKMPRCE5

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/ZKMPRCE542CRDFBCZYRNFJW6L6 \
  | 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: ca98f8889de685119422ce22d2a6de5fa9b3425eccd62860f8caf7becbc4f663

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d62629c79dc1b99417e9f60ec7d7e2cb7eb86c3aab7da5f0e455e1183e02466f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.CO",
    "submitted_at": "2018-04-30T06:51:50Z",
    "title_canon_sha256": "566337148398274d64c74842b6209bcdfc2012a6e2dbdff2ad934e59b40c8e6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.11058",
    "kind": "arxiv",
    "version": 1
  }
}