Pith Number

pith:SP4KX6Y4

pith:2017:SP4KX6Y4QEIOFBKTILHUQENOZN

not attested not anchored not stored refs pending

The empirical Christoffel function with applications in data analysis

Edouard Pauwels, Jean-Bernard Lasserre

arxiv:1701.02886 v4 · 2017-01-11 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SP4KX6Y4QEIOFBKTILHUQENOZN}

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	2026-05-17T23:54:36.924158Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93f8abfb1c8110e2855342cf4811aecb6cb48e687f02d7652b7750c2adeef6b5

Aliases

arxiv: 1701.02886 · arxiv_version: 1701.02886v4 · doi: 10.48550/arxiv.1701.02886 · pith_short_12: SP4KX6Y4QEIO · pith_short_16: SP4KX6Y4QEIOFBKT · pith_short_8: SP4KX6Y4

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/SP4KX6Y4QEIOFBKTILHUQENOZN \
  | 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: 93f8abfb1c8110e2855342cf4811aecb6cb48e687f02d7652b7750c2adeef6b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "948040a009991853f09898556fcbd1b679007c480685d8288e83baff1af72982",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2017-01-11T08:36:54Z",
    "title_canon_sha256": "758327116d70cbe6376c40c88a9d922a51dae5bcd2e1d63bd8bf0597e2398867"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02886",
    "kind": "arxiv",
    "version": 4
  }
}