Pith Number

pith:CKAR42SO

pith:2019:CKAR42SOFFQYU4ZL2SWWK3FFGV

not attested not anchored not stored refs pending

Robustness and Tractability for Non-convex M-estimators

Huan Xu, Jianjun Shi, Ruizhi Zhang, Yajun Mei

arxiv:1906.02272 v1 · 2019-06-05 · 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{CKAR42SOFFQYU4ZL2SWWK3FFGV}

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	2026-05-17T23:44:01.738713Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12811e6a4e29618a732bd4ad656ca5356867b6093bb1b47ec760ea4afa5757dc

Aliases

arxiv: 1906.02272 · arxiv_version: 1906.02272v1 · doi: 10.48550/arxiv.1906.02272 · pith_short_12: CKAR42SOFFQY · pith_short_16: CKAR42SOFFQYU4ZL · pith_short_8: CKAR42SO

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/CKAR42SOFFQYU4ZL2SWWK3FFGV \
  | 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: 12811e6a4e29618a732bd4ad656ca5356867b6093bb1b47ec760ea4afa5757dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2138387e906c253950c7be46954fb51da9ca48e0a04ebeaf7305c608e392d26",
    "cross_cats_sorted": [
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.ST",
    "submitted_at": "2019-06-05T19:37:48Z",
    "title_canon_sha256": "86e5614cba40890f2caccf807fb49b69a06dfbaffac42e33569be70ca6020275"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.02272",
    "kind": "arxiv",
    "version": 1
  }
}