Pith Number

pith:4HH4SYWM

pith:2019:4HH4SYWMZVEHYKI5U56FF5YEUT

not attested not anchored not stored refs pending

Classical Policy Gradient: Preserving Bellman's Principle of Optimality

Chris Nota, James Kostas, Philip S. Thomas, Scott M. Jordan, Yash Chandak

arxiv:1906.03063 v1 · 2019-06-06 · 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{4HH4SYWMZVEHYKI5U56FF5YEUT}

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	2026-05-17T23:43:55.191125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1cfc962cccd487c291da77c52f704a4fe7fe3d910fc06b87f48ff1e591e3a7b

Aliases

arxiv: 1906.03063 · arxiv_version: 1906.03063v1 · doi: 10.48550/arxiv.1906.03063 · pith_short_12: 4HH4SYWMZVEH · pith_short_16: 4HH4SYWMZVEHYKI5 · pith_short_8: 4HH4SYWM

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/4HH4SYWMZVEHYKI5U56FF5YEUT \
  | 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: e1cfc962cccd487c291da77c52f704a4fe7fe3d910fc06b87f48ff1e591e3a7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61a202961f504584a670632977e365411bfffeb9aa31dede8b1ce4beb7a6ea79",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-06-06T16:09:01Z",
    "title_canon_sha256": "97d0c774d09598cc58cd612a4d2792efb3cf2389156f2882d8206573f8ef9659"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.03063",
    "kind": "arxiv",
    "version": 1
  }
}