Pith Number

pith:QJUPTBRT

pith:2014:QJUPTBRTZPHH467D7EJWNIGQ66

not attested not anchored not stored refs pending

Optimal Shrinkage of Singular Values

David L. Donoho, Matan Gavish

arxiv:1405.7511 v3 · 2014-05-29 · 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{QJUPTBRTZPHH467D7EJWNIGQ66}

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	2026-05-18T01:14:53.498821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8268f98633cbce7e7be3f91366a0d0f7b8b0ebe87c219c22068aa80e66c0b497

Aliases

arxiv: 1405.7511 · arxiv_version: 1405.7511v3 · doi: 10.48550/arxiv.1405.7511 · pith_short_12: QJUPTBRTZPHH · pith_short_16: QJUPTBRTZPHH467D · pith_short_8: QJUPTBRT

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/QJUPTBRTZPHH467D7EJWNIGQ66 \
  | 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: 8268f98633cbce7e7be3f91366a0d0f7b8b0ebe87c219c22068aa80e66c0b497

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee4df4394917760d80c503725edad946ac1ea4e921acffe3313093a985e0fe02",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2014-05-29T10:10:15Z",
    "title_canon_sha256": "64de7144eec714454ab18bb040b4487c66ce30776ba5435fa083d71489fff449"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.7511",
    "kind": "arxiv",
    "version": 3
  }
}