Pith Number

pith:Y34LWIMX

pith:2026:Y34LWIMX7VG6GP2KE2TMUGS5MO

not attested not anchored not stored refs pending

Diagnosing Long-Video Quantitative Reasoning in Multimodal LLMs via Enumeration and Counting

Fumihiko Tsuchiya, Mahiro Ukai, Nakamasa Inoue, Shuhei Kurita, Shunsuke Yasuki, Taiki Miyanishi, Yusuke Iwasawa, Yutaka Matsuo

arxiv:2603.29943 v2 · 2026-03-31 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y34LWIMX7VG6GP2KE2TMUGS5MO}

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	2026-07-13T01:20:07.881836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6f8bb2197fd4de33f4a26a6ca1a5d63866b0c918ba23810b8b0843a1960db97

Aliases

arxiv: 2603.29943 · arxiv_version: 2603.29943v2 · doi: 10.48550/arxiv.2603.29943 · pith_short_12: Y34LWIMX7VG6 · pith_short_16: Y34LWIMX7VG6GP2K · pith_short_8: Y34LWIMX

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/Y34LWIMX7VG6GP2KE2TMUGS5MO \
  | 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: c6f8bb2197fd4de33f4a26a6ca1a5d63866b0c918ba23810b8b0843a1960db97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4de321f6dc0f025a23aed6ec01d92fab954a21f5947eb8cff855bc1dad00e20d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-03-31T16:16:17Z",
    "title_canon_sha256": "e7d652964540abfb8f21e4720d57c4b4c0939d7311dab2b9f8b44865147ebb22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.29943",
    "kind": "arxiv",
    "version": 2
  }
}