Pith Number

pith:HO7RRWDE

pith:2020:HO7RRWDEB4ZMS6G77PABF54EN2

not attested not anchored not stored refs pending

Learning Graph Laplacian with MCP

Defeng Sun, Kim-Chuan Toh, Yangjing Zhang

arxiv:2010.11559 v2 · 2020-10-22 · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HO7RRWDEB4ZMS6G77PABF54EN2}

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	2026-07-05T07:46:09.480252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bbf18d8640f32c978dffbc012f7846e83ffb610824a5ed09530f7af772d2e81

Aliases

arxiv: 2010.11559 · arxiv_version: 2010.11559v2 · doi: 10.48550/arxiv.2010.11559 · pith_short_12: HO7RRWDEB4ZM · pith_short_16: HO7RRWDEB4ZMS6G7 · pith_short_8: HO7RRWDE

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/HO7RRWDEB4ZMS6G77PABF54EN2 \
  | 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: 3bbf18d8640f32c978dffbc012f7846e83ffb610824a5ed09530f7af772d2e81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea44ca8408a152b59130d5ffd483575400ca7435c8c60147bf68dbbeeced4920",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-10-22T09:33:49Z",
    "title_canon_sha256": "99c532b6db44ddbc2c1f2d9d7fa56ab992164d50a2874275a5b0a6060226c96e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.11559",
    "kind": "arxiv",
    "version": 2
  }
}