Pith Number

pith:PLKYJ5FA

pith:2018:PLKYJ5FASEBBKIAW6SPWDSSH7G

not attested not anchored not stored refs pending

Properly-weighted graph Laplacian for semi-supervised learning

Dejan Slepcev, Jeff Calder

arxiv:1810.04351 v2 · 2018-10-10 · math.AP · cs.LG · math.NA · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLKYJ5FASEBBKIAW6SPWDSSH7G}

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	2026-05-17T23:49:41.015656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad584f4a09102152016f49f61ca47f9ac64b544312e7777a3861d0d408d7f7e

Aliases

arxiv: 1810.04351 · arxiv_version: 1810.04351v2 · doi: 10.48550/arxiv.1810.04351 · pith_short_12: PLKYJ5FASEBB · pith_short_16: PLKYJ5FASEBBKIAW · pith_short_8: PLKYJ5FA

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/PLKYJ5FASEBBKIAW6SPWDSSH7G \
  | 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: 7ad584f4a09102152016f49f61ca47f9ac64b544312e7777a3861d0d408d7f7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "41398fddeac88e1737c57a1eea99e3fc2565a19db3adb38b34c700ed7de8542b",
    "cross_cats_sorted": [
      "cs.LG",
      "math.NA",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-10-10T03:37:29Z",
    "title_canon_sha256": "535c10be27c1aa74ddb3cf9b4519b84ee2056b376ee6d4548f8b4c51b155262f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04351",
    "kind": "arxiv",
    "version": 2
  }
}