Pith Number

pith:3RPFTXCV

pith:2016:3RPFTXCVJNQBQKVY4WR7ZIL6PT

not attested not anchored not stored refs pending

Fitting Spectral Decay with the $k$-Support Norm

Andrew M. McDonald, Dimitris Stamos, Massimiliano Pontil

arxiv:1601.00449 v1 · 2016-01-04 · 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{3RPFTXCVJNQBQKVY4WR7ZIL6PT}

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	2026-05-18T01:23:27.398489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc5e59dc554b60182ab8e5a3fca17e7cec8a9d3c08e7381b57952d07d4a02a33

Aliases

arxiv: 1601.00449 · arxiv_version: 1601.00449v1 · doi: 10.48550/arxiv.1601.00449 · pith_short_12: 3RPFTXCVJNQB · pith_short_16: 3RPFTXCVJNQBQKVY · pith_short_8: 3RPFTXCV

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/3RPFTXCVJNQBQKVY4WR7ZIL6PT \
  | 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: dc5e59dc554b60182ab8e5a3fca17e7cec8a9d3c08e7381b57952d07d4a02a33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5032e79693e0166d60b0fea984958fd77a34b070495999659d0679698c65007",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-01-04T10:48:29Z",
    "title_canon_sha256": "7082682f18f14e42a6839ffdb6e8e9fa241109e984549e5ca0ffd2a9434595bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.00449",
    "kind": "arxiv",
    "version": 1
  }
}