Pith Number

pith:RL6H4ARQ

pith:2018:RL6H4ARQHEBAHI7Y3GAZJUQJD7

not attested not anchored not stored refs pending

Estimating a change point in a sequence of very high-dimensional covariance matrices

G. M. Pan, H. Dette, Q. Yang

arxiv:1807.10797 v1 · 2018-07-27 · stat.ME · 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{RL6H4ARQHEBAHI7Y3GAZJUQJD7}

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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	2026-05-18T00:09:37.374045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8afc7e0230390203a3f8d98194d2091fe8487700a3895f5916d11a0f2b1e9a62

Aliases

arxiv: 1807.10797 · arxiv_version: 1807.10797v1 · doi: 10.48550/arxiv.1807.10797 · pith_short_12: RL6H4ARQHEBA · pith_short_16: RL6H4ARQHEBAHI7Y · pith_short_8: RL6H4ARQ

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/RL6H4ARQHEBAHI7Y3GAZJUQJD7 \
  | 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: 8afc7e0230390203a3f8d98194d2091fe8487700a3895f5916d11a0f2b1e9a62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "35aefee37c558203948e11c0b44410dbf9ff8caa27c74d853dde665b4ef95169",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2018-07-27T18:56:10Z",
    "title_canon_sha256": "da6890adffb37c9e353d57d3cbe76208d3ca1a5a105101d66c85e3a61eed451c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10797",
    "kind": "arxiv",
    "version": 1
  }
}