Pith Number

pith:QOW4MDJ3

pith:2015:QOW4MDJ3OLYTSPT33ZPW226LDC

not attested not anchored not stored refs pending

Optimal Estimation of A Quadratic Functional and Detection of Simultaneous Signals

T. Tony Cai, Xin Lu Tan

arxiv:1505.01585 v1 · 2015-05-07 · 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{QOW4MDJ3OLYTSPT33ZPW226LDC}

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	2026-05-18T02:16:48.381457Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83adc60d3b72f1393e7bde5f6d6bcb1884ab1f90cd75127c056f640cc2cb2719

Aliases

arxiv: 1505.01585 · arxiv_version: 1505.01585v1 · doi: 10.48550/arxiv.1505.01585 · pith_short_12: QOW4MDJ3OLYT · pith_short_16: QOW4MDJ3OLYTSPT3 · pith_short_8: QOW4MDJ3

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/QOW4MDJ3OLYTSPT33ZPW226LDC \
  | 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: 83adc60d3b72f1393e7bde5f6d6bcb1884ab1f90cd75127c056f640cc2cb2719

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4cd59b58eb0264ee6a7fbac394ce056c4945808ad875357fc2de0737cce9f540",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-05-07T04:41:15Z",
    "title_canon_sha256": "94d0d0e7215093a90ca09806df03b6a77b592b5e5c14b2cf0f2a0f01898088b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01585",
    "kind": "arxiv",
    "version": 1
  }
}