Pith Number

pith:MYJCOOYF

pith:2022:MYJCOOYF32K45B2B3VFPF7UFSH

not attested not anchored not stored refs pending

Physical Derivatives: Computing policy gradients by physical forward-propagation

Arash Mehrjou, Ashkan Soleymani, Bernhard Sch\"olkopf, Stefan Bauer

arxiv:2201.05830 v1 · 2022-01-15 · cs.RO · math.DS · 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{MYJCOOYF32K45B2B3VFPF7UFSH}

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	2026-07-05T03:48:52.083118Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6612273b05de95ce8741dd4af2fe8591f11c242f40fa70cdaef9f8ea1bf14f63

Aliases

arxiv: 2201.05830 · arxiv_version: 2201.05830v1 · doi: 10.48550/arxiv.2201.05830 · pith_short_12: MYJCOOYF32K4 · pith_short_16: MYJCOOYF32K45B2B · pith_short_8: MYJCOOYF

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/MYJCOOYF32K45B2B3VFPF7UFSH \
  | 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: 6612273b05de95ce8741dd4af2fe8591f11c242f40fa70cdaef9f8ea1bf14f63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c438fa4dfa3151cf7ff0149a6a76a16f89ad0852f749ee1b395bc1e24cb3940b",
    "cross_cats_sorted": [
      "math.DS",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2022-01-15T11:27:42Z",
    "title_canon_sha256": "5716f4ce7c344ed38c65c6e1c4089130a4d463098b1725736b9aa942598c9e78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.05830",
    "kind": "arxiv",
    "version": 1
  }
}