Pith Number

pith:7IAJXFMO

pith:2025:7IAJXFMOYJNBEYYY4QLNEPQOX2

not attested not anchored not stored refs pending

HEFT: A Coarse-to-Fine Hierarchy for Enhancing the Efficiency and Accuracy of Language Model Reasoning

Brennen Hill

arxiv:2509.09801 v1 · 2025-09-11 · cs.CL · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7IAJXFMOYJNBEYYY4QLNEPQOX2}

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	2026-07-05T12:09:49.625556Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa009b958ec25a126318e416d23e0ebead3925c658662c030e0505c88ce7c43c

Aliases

arxiv: 2509.09801 · arxiv_version: 2509.09801v1 · doi: 10.48550/arxiv.2509.09801 · pith_short_12: 7IAJXFMOYJNB · pith_short_16: 7IAJXFMOYJNBEYYY · pith_short_8: 7IAJXFMO

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/7IAJXFMOYJNBEYYY4QLNEPQOX2 \
  | 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: fa009b958ec25a126318e416d23e0ebead3925c658662c030e0505c88ce7c43c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b33aa9ae6c4e4ee360e09a9c39b0e2c5ae447ea60c7013eb1ed55248f42a07e9",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-09-11T19:06:46Z",
    "title_canon_sha256": "14087c38f2bc3fbe6f4a894b79d386c4364b1626edac3304c6cd37350ebf2857"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09801",
    "kind": "arxiv",
    "version": 1
  }
}