Pith Number

pith:ZYOGKUGZ

pith:2026:ZYOGKUGZMBTIJWUVSCD4WM64OI

not attested not anchored not stored refs pending

Smooth Hard-Thresholding for Singular Values with Stein's Unbiased Risk Estimate

Guanzhong Yang

arxiv:2606.06632 v1 · 2026-06-04 · math.ST · cs.NA · eess.IV · eess.SP · math.NA · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZYOGKUGZMBTIJWUVSCD4WM64OI}

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	2026-06-08T01:04:20.073862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ce1c6550d9606684da959087cb33dc722dea5252c21518403b169ec53d953749

Aliases

arxiv: 2606.06632 · arxiv_version: 2606.06632v1 · doi: 10.48550/arxiv.2606.06632 · pith_short_12: ZYOGKUGZMBTI · pith_short_16: ZYOGKUGZMBTIJWUV · pith_short_8: ZYOGKUGZ

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/ZYOGKUGZMBTIJWUVSCD4WM64OI \
  | 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: ce1c6550d9606684da959087cb33dc722dea5252c21518403b169ec53d953749

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e64073747038f151d293c6b14dd5ca192b733349ac4aa58d583c7057cf8e213",
    "cross_cats_sorted": [
      "cs.NA",
      "eess.IV",
      "eess.SP",
      "math.NA",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2026-06-04T18:31:11Z",
    "title_canon_sha256": "32e4e4efdc204eb5ebc5eb227a5a7a6c0fd07f387ae7705fdda4b34fb5ea4d24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.06632",
    "kind": "arxiv",
    "version": 1
  }
}