Pith Number

pith:33DEHTKY

pith:2018:33DEHTKYT3RDP4VWV5QSFR5UZA

not attested not anchored not stored refs pending

Trust-Region Algorithms for Training Responses: Machine Learning Methods Using Indefinite Hessian Approximations

Jennifer B. Erway, Joshua Griffin, Riadh Omheni, Roummel F. Marcia

arxiv:1807.00251 v3 · 2018-07-01 · math.NA · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{33DEHTKYT3RDP4VWV5QSFR5UZA}

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	2026-05-17T23:45:20.780780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dec643cd589ee237f2b6af6122c7b4c838b1122c596a4432f04a6a4fbd9e5ebd

Aliases

arxiv: 1807.00251 · arxiv_version: 1807.00251v3 · doi: 10.48550/arxiv.1807.00251 · pith_short_12: 33DEHTKYT3RD · pith_short_16: 33DEHTKYT3RDP4VW · pith_short_8: 33DEHTKY

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/33DEHTKYT3RDP4VWV5QSFR5UZA \
  | 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: dec643cd589ee237f2b6af6122c7b4c838b1122c596a4432f04a6a4fbd9e5ebd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5104e9254273eedc584ff78ee1f5597a002b62f08acf58e076b8643c8f6d27fa",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-01T01:08:40Z",
    "title_canon_sha256": "0410b39c061134b4181d17a9017b78e306b18a6d66293d130c486977ac477946"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00251",
    "kind": "arxiv",
    "version": 3
  }
}