Pith Number

pith:7UYCKGI5

pith:2021:7UYCKGI5XYJ4MJ6BXSEKYGG2RA

not attested not anchored not stored refs pending

Quadric Hypersurface Intersection for Manifold Learning in Feature Space

Aleksandr Petiushko, Anatolii Zaikovskii, Artem Klochkov, Evgeny Abramov, Fedor Pavutnitskiy, Sergei O. Ivanov, Viacheslav Borovitskiy, Viktor Vialov

arxiv:2102.06186 v2 · 2021-02-11 · 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{7UYCKGI5XYJ4MJ6BXSEKYGG2RA}

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	2026-07-05T03:59:37.941088Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd3025191dbe13c627c1bc88ac18da8802856ec37f786760327fd7c99d713ddb

Aliases

arxiv: 2102.06186 · arxiv_version: 2102.06186v2 · doi: 10.48550/arxiv.2102.06186 · pith_short_12: 7UYCKGI5XYJ4 · pith_short_16: 7UYCKGI5XYJ4MJ6B · pith_short_8: 7UYCKGI5

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/7UYCKGI5XYJ4MJ6BXSEKYGG2RA \
  | 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: fd3025191dbe13c627c1bc88ac18da8802856ec37f786760327fd7c99d713ddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cda89613fcbdf3592857dc57e06f742442e319a8311de8eb7ca028ebd21fff33",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-02-11T18:52:08Z",
    "title_canon_sha256": "fe1a364e54a853228a552b4da24eed1c02a33c75c6a6117b4a3236b7e4e1a066"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06186",
    "kind": "arxiv",
    "version": 2
  }
}