Pith Number

pith:ZIOYOBFT

pith:2023:ZIOYOBFTVTTP5B7BUFLOWQMFZF

not attested not anchored not stored refs pending

Contrastive Moments: Unsupervised Halfspace Learning in Polynomial Time

Santosh S. Vempala, Xinyuan Cao

arxiv:2311.01435 v1 · 2023-11-02 · cs.LG · math.PR · 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{ZIOYOBFTVTTP5B7BUFLOWQMFZF}

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	2026-07-05T07:08:26.141367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca1d8704b3ace6fe87e1a156eb4185c97c26f7ea0d9a0aef185e042205280e08

Aliases

arxiv: 2311.01435 · arxiv_version: 2311.01435v1 · doi: 10.48550/arxiv.2311.01435 · pith_short_12: ZIOYOBFTVTTP · pith_short_16: ZIOYOBFTVTTP5B7B · pith_short_8: ZIOYOBFT

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/ZIOYOBFTVTTP5B7BUFLOWQMFZF \
  | 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: ca1d8704b3ace6fe87e1a156eb4185c97c26f7ea0d9a0aef185e042205280e08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39ff6f5480a5019f489dcffb017be36fc34ee25166b8a38b1745bb7c211f2dfb",
    "cross_cats_sorted": [
      "math.PR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2023-11-02T17:51:10Z",
    "title_canon_sha256": "a7b1e9a7b8b3abc448481937f89975b9e021eff209e224aa97566f4954b3a4f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.01435",
    "kind": "arxiv",
    "version": 1
  }
}