Pith Number

pith:MSP75ZY4

pith:2019:MSP75ZY4Z7UEDEV3XGSP74KC3B

not attested not anchored not stored refs pending

Quasi-Newton Trust Region Policy Optimization

Arvind Raghunathan, Devesh Jha, Diego Romeres

arxiv:1912.11912 v1 · 2019-12-26 · cs.LG · cs.AI · cs.RO · 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{MSP75ZY4Z7UEDEV3XGSP74KC3B}

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	2026-07-05T00:28:31.061111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

649ffee71ccfe84192bbb9a4fff142d84e1b940c5ba4b0b11e0de8454f1836a6

Aliases

arxiv: 1912.11912 · arxiv_version: 1912.11912v1 · doi: 10.48550/arxiv.1912.11912 · pith_short_12: MSP75ZY4Z7UE · pith_short_16: MSP75ZY4Z7UEDEV3 · pith_short_8: MSP75ZY4

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/MSP75ZY4Z7UEDEV3XGSP74KC3B \
  | 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: 649ffee71ccfe84192bbb9a4fff142d84e1b940c5ba4b0b11e0de8454f1836a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13e3e0976d6547ea96ed81bfe542f7cd464ad1769641a1ecc37b69a08ea8d030",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.RO",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-12-26T18:29:38Z",
    "title_canon_sha256": "0f9097da985d456a04df1d9ecbc7cf5851b6ade4a950095161df35478561af28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.11912",
    "kind": "arxiv",
    "version": 1
  }
}