Pith Number

pith:I5D2TXP4

pith:2025:I5D2TXP4ZATAWSJLOGSA6B4GQW

not attested not anchored not stored refs pending

R1-Zero's "Aha Moment" in Visual Reasoning on a 2B Non-SFT Model

Cho-Jui Hsieh, Hengguang Zhou, Minhao Cheng, Ruochen Wang, Tianyi Zhou, Xirui Li

arxiv:2503.05132 v2 · 2025-03-07 · cs.AI · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I5D2TXP4ZATAWSJLOGSA6B4GQW}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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.

Cited by

22 papers in Pith

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Mobile-R1: Towards Interactive Capability for VLM-Based Mobile Agent via Systematic Training

OpenVLThinker: Complex Vision-Language Reasoning via Iterative SFT-RL Cycles

The Landscape of Agentic Reinforcement Learning for LLMs: A Survey

Geo-R1: Improving Few-Shot Geospatial Referring Expression Understanding with Reinforcement Fine-Tuning

Receipt and verification

First computed	2026-05-19T07:09:20.914616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4747a9ddfcc8260b492b71a40f078685bcb36c58f1254a98253e3328b54685dd

Aliases

arxiv: 2503.05132 · arxiv_version: 2503.05132v2 · doi: 10.48550/arxiv.2503.05132 · pith_short_12: I5D2TXP4ZATA · pith_short_16: I5D2TXP4ZATAWSJL · pith_short_8: I5D2TXP4

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/I5D2TXP4ZATAWSJLOGSA6B4GQW \
  | 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: 4747a9ddfcc8260b492b71a40f078685bcb36c58f1254a98253e3328b54685dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09099a3415debc8180936d340334708ac4f921ecf1c4ec19398112305547f649",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-03-07T04:21:47Z",
    "title_canon_sha256": "b33cc3ddbc1eea765ae5b4de4ec8530c484950f1bb7871d70fa4769b9335cc53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.05132",
    "kind": "arxiv",
    "version": 2
  }
}