Pith Number

pith:H6QJKPEX

pith:2018:H6QJKPEXBQKUL2UYZVWYWOMSLF

not attested not anchored not stored refs pending

When is there a Representer Theorem? Nondifferentiable Regularisers and Banach spaces

Kevin Schlegel

arxiv:1804.09605 v1 · 2018-04-25 · 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{H6QJKPEXBQKUL2UYZVWYWOMSLF}

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	2026-05-18T00:17:31.269792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fa0953c970c1545ea98cd6d8b3992597a2e2d36d4778080c71321a2ef969844

Aliases

arxiv: 1804.09605 · arxiv_version: 1804.09605v1 · doi: 10.48550/arxiv.1804.09605 · pith_short_12: H6QJKPEXBQKU · pith_short_16: H6QJKPEXBQKUL2UY · pith_short_8: H6QJKPEX

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/H6QJKPEXBQKUL2UYZVWYWOMSLF \
  | 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: 3fa0953c970c1545ea98cd6d8b3992597a2e2d36d4778080c71321a2ef969844

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d34786dc02b7630d547526c6adaad4128ad51ec55b9e3eeb828bd337c17d93d",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-04-25T14:47:25Z",
    "title_canon_sha256": "95eca41067d8ee489a1403a39485794ed1b6095b54191c41356f4e436e275792"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09605",
    "kind": "arxiv",
    "version": 1
  }
}