Pith Number

pith:2LPYBMIG

pith:2021:2LPYBMIGUFFKRORJWO7LAWWY2M

not attested not anchored not stored refs pending

$L_p$ Isotonic Regression Algorithms Using an $L_0$ Approach

Quentin F. Stout

arxiv:2107.00251 v3 · 2021-07-01 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2LPYBMIGUFFKRORJWO7LAWWY2M}

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	2026-07-05T06:26:14.888969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2df80b106a14aa8ba29b3beb05ad8d30e2bd38745be111fbe9a85f948fd595c

Aliases

arxiv: 2107.00251 · arxiv_version: 2107.00251v3 · doi: 10.48550/arxiv.2107.00251 · pith_short_12: 2LPYBMIGUFFK · pith_short_16: 2LPYBMIGUFFKRORJ · pith_short_8: 2LPYBMIG

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/2LPYBMIGUFFKRORJWO7LAWWY2M \
  | 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: d2df80b106a14aa8ba29b3beb05ad8d30e2bd38745be111fbe9a85f948fd595c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "81cc7163b89573e063ae16e732e7270544eb1643e072b8b7c56cc96944544377",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2021-07-01T07:04:58Z",
    "title_canon_sha256": "e0e7fbcbf0743d0638bd3d09a3877f9311369f58dad4bcb84f7983f612b854ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.00251",
    "kind": "arxiv",
    "version": 3
  }
}