Pith Number

pith:6BV4ZUJV

pith:2018:6BV4ZUJVUA3EBFF5HZ2MI6JJJZ

not attested not anchored not stored refs pending

ensmallen: a flexible C++ library for efficient function optimization

Conrad Sanderson, Marcus Edel, Ryan R. Curtin, Shikhar Bhardwaj, Yannis Mentekidis

arxiv:1810.09361 v2 · 2018-10-22 · cs.MS · cs.LG · 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{6BV4ZUJVUA3EBFF5HZ2MI6JJJZ}

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	2026-05-17T23:58:47.392987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f06bccd135a0364094bd3e74c479294e7b112a404b8856af68ee5d723c291459

Aliases

arxiv: 1810.09361 · arxiv_version: 1810.09361v2 · doi: 10.48550/arxiv.1810.09361 · pith_short_12: 6BV4ZUJVUA3E · pith_short_16: 6BV4ZUJVUA3EBFF5 · pith_short_8: 6BV4ZUJV

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/6BV4ZUJVUA3EBFF5HZ2MI6JJJZ \
  | 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: f06bccd135a0364094bd3e74c479294e7b112a404b8856af68ee5d723c291459

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "676b8207245843b19eb02d2fecd198d474634ff31729bb21fd39145c5b0599bb",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2018-10-22T15:26:35Z",
    "title_canon_sha256": "c635e682c9e10bec1368d719f2472c41ea24032b0c2452dc2c13ef61b39d2511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09361",
    "kind": "arxiv",
    "version": 2
  }
}