Pith Number

pith:MKXU4EUC

pith:2015:MKXU4EUCHRUBYACLGQCKLNACQ7

not attested not anchored not stored refs pending

Robust Covariance and Scatter Matrix Estimation under Huber's Contamination Model

Chao Gao, Mengjie Chen, Zhao Ren

arxiv:1506.00691 v4 · 2015-06-01 · math.ST · stat.ME · 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{MKXU4EUCHRUBYACLGQCKLNACQ7}

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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.

Cited by

1 paper in Pith

Corruption-Tolerant Asynchronous Q-Learning with Near-Optimal Rates

Receipt and verification

First computed	2026-05-18T00:42:35.480003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

62af4e12823c681c004b3404a5b40287e3697401273cd35ba0efe0cb6580399c

Aliases

arxiv: 1506.00691 · arxiv_version: 1506.00691v4 · doi: 10.48550/arxiv.1506.00691 · pith_short_12: MKXU4EUCHRUB · pith_short_16: MKXU4EUCHRUBYACL · pith_short_8: MKXU4EUC

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/MKXU4EUCHRUBYACLGQCKLNACQ7 \
  | 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: 62af4e12823c681c004b3404a5b40287e3697401273cd35ba0efe0cb6580399c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aeb51c100c308fff87f472300a192fb5d82847f857c4db1f6da9e030d8d24216",
    "cross_cats_sorted": [
      "stat.ME",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2015-06-01T22:08:52Z",
    "title_canon_sha256": "a40ff08785578ab359cd254959b458568c7c4801067c7ebd444bde5b3222df62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.00691",
    "kind": "arxiv",
    "version": 4
  }
}