Pith Number

pith:I5UVBOCK

pith:2026:I5UVBOCKEPPAJBH4SWDPPURYSU

not attested not anchored not stored refs pending

LambdaPO: A Lambda Style Policy Optimization for Reasoning Language Models

Bowen Deng, Jinghan Li, Liang Zhao, Xinyuan Chen, Yipeng Zhou, Zhe Yuan, Zhiqian Chen

arxiv:2605.19416 v1 · 2026-05-19 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I5UVBOCKEPPAJBH4SWDPPURYSU}

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	2026-05-20T01:05:44.653161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

476950b84a23de0484fc9586f7d2389521efec0ef2d68c82066ed74991ccec6e

Aliases

arxiv: 2605.19416 · arxiv_version: 2605.19416v1 · doi: 10.48550/arxiv.2605.19416 · pith_short_12: I5UVBOCKEPPA · pith_short_16: I5UVBOCKEPPAJBH4 · pith_short_8: I5UVBOCK

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/I5UVBOCKEPPAJBH4SWDPPURYSU \
  | 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: 476950b84a23de0484fc9586f7d2389521efec0ef2d68c82066ed74991ccec6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7a82f0abdd2eb9403e3b2f5a9828f0d29451b65af54d20956feb0da44f78eea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-05-19T06:10:24Z",
    "title_canon_sha256": "09b36ebea38b8aa092162f469c106f3f18b1cc400c662e2ddf6f054f947f77c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.19416",
    "kind": "arxiv",
    "version": 1
  }
}