Pith Number

pith:XNJMUCQY

pith:2013:XNJMUCQYRFXLOE6AHUVWUQD3AB

not attested not anchored not stored refs pending

Minimax risk of matrix denoising by singular value thresholding

David Donoho, Matan Gavish

arxiv:1304.2085 v4 · 2013-04-08 · math.ST · 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{XNJMUCQYRFXLOE6AHUVWUQD3AB}

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	2026-05-18T02:38:44.634712Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb52ca0a18896eb713c03d2b6a407b004006a8a662fc0eb8012cc531c160ec76

Aliases

arxiv: 1304.2085 · arxiv_version: 1304.2085v4 · doi: 10.48550/arxiv.1304.2085 · pith_short_12: XNJMUCQYRFXL · pith_short_16: XNJMUCQYRFXLOE6A · pith_short_8: XNJMUCQY

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/XNJMUCQYRFXLOE6AHUVWUQD3AB \
  | 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: bb52ca0a18896eb713c03d2b6a407b004006a8a662fc0eb8012cc531c160ec76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae86469b894c0ffd8a451b450d776a4e6b67f1aca607fcc6ffc76973f3f77778",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2013-04-08T01:39:01Z",
    "title_canon_sha256": "bd47a6c15e015f54ce5fafa4c5d421e8b7038aa78e5f803f93fdb949f324f962"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2085",
    "kind": "arxiv",
    "version": 4
  }
}