Pith Number

pith:CHAMXEMP

pith:2017:CHAMXEMP7TWPMPL2HHFJ5WKXZL

not attested not anchored not stored refs pending

Heavy-Tailed Analogues of the Covariance Matrix for ICA

Anupama Nandi, Joseph Anderson, Luis Rademacher, Navin Goyal

arxiv:1702.06976 v1 · 2017-02-22 · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CHAMXEMP7TWPMPL2HHFJ5WKXZL}

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	2026-05-18T00:50:08.821077Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11c0cb918ffcecf63d7a39ca9ed957caf94e1750ec2423d3479fd8347a951944

Aliases

arxiv: 1702.06976 · arxiv_version: 1702.06976v1 · doi: 10.48550/arxiv.1702.06976 · pith_short_12: CHAMXEMP7TWP · pith_short_16: CHAMXEMP7TWPMPL2 · pith_short_8: CHAMXEMP

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/CHAMXEMP7TWPMPL2HHFJ5WKXZL \
  | 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: 11c0cb918ffcecf63d7a39ca9ed957caf94e1750ec2423d3479fd8347a951944

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a421e66e6b0be498c912166e4e85017e08449b832d6a42972ca108da739ee89",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2017-02-22T19:27:38Z",
    "title_canon_sha256": "2da6c9919427a4818c08b168dc4b7bf5a37035cd3f860ae2a25498097863721e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.06976",
    "kind": "arxiv",
    "version": 1
  }
}