Pith Number

pith:R3PUAGCA

pith:2026:R3PUAGCAYTSNDXV2ZQ7O77CQZU

not attested not anchored not stored refs pending

Breaking the Total Variance Barrier: Sharp Sample Complexity for Linear Heteroscedastic Bandits with Fixed Action Set

Heyang Zhao, Pan Xu, Quanquan Gu, Tianyuan Jin, Vincent Y. F. Tan, Weixin Wang

arxiv:2607.23679 v1 · 2026-07-26 · cs.LG · 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{R3PUAGCAYTSNDXV2ZQ7O77CQZU}

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	2026-07-28T01:23:05.064540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8edf401840c4e4d1debacc3eeffc50cd1314c0f23298ce22ddb82fd7268bc76d

Aliases

arxiv: 2607.23679 · arxiv_version: 2607.23679v1 · doi: 10.48550/arxiv.2607.23679 · pith_short_12: R3PUAGCAYTSN · pith_short_16: R3PUAGCAYTSNDXV2 · pith_short_8: R3PUAGCA

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/R3PUAGCAYTSNDXV2ZQ7O77CQZU \
  | 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: 8edf401840c4e4d1debacc3eeffc50cd1314c0f23298ce22ddb82fd7268bc76d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "079591f3dee896f0950872bf16538dd5b51f348b891b1d96a02ccd5199fb3385",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-26T14:24:34Z",
    "title_canon_sha256": "1c634d46c6b2b6aa03a1252937fa6ab352dec4cdb2c7ccefdd0beaac60ba7898"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.23679",
    "kind": "arxiv",
    "version": 1
  }
}