Pith Number

pith:IJWHZ223

pith:2025:IJWHZ2233QZEVCRBJPHY2KJPEH

not attested not anchored not stored refs pending

Native Hierarchical and Compositional Representations with Subspace Embeddings

Chenyan Xiong, Gabriel Moreira, Jo\~ao Paulo Costeira, Manuel Marques, Zita Marinho

arxiv:2508.16687 v2 · 2025-08-21 · 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{IJWHZ2233QZEVCRBJPHY2KJPEH}

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	2026-06-01T02:03:25.610121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

426c7ceb5bdc324a8a214bcf8d292f21e963b6572c947e457ebe88b36279d07d

Aliases

arxiv: 2508.16687 · arxiv_version: 2508.16687v2 · doi: 10.48550/arxiv.2508.16687 · pith_short_12: IJWHZ2233QZE · pith_short_16: IJWHZ2233QZEVCRB · pith_short_8: IJWHZ223

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/IJWHZ2233QZEVCRBJPHY2KJPEH \
  | 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: 426c7ceb5bdc324a8a214bcf8d292f21e963b6572c947e457ebe88b36279d07d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2add1d75b208a110c34bf7115ccfad4ebf906073262228aa1e2b5339f1e6815a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-08-21T18:29:17Z",
    "title_canon_sha256": "74e10e3b1f7e73ba4318767788e3000d1ee98e8f95a3fadf178bacd0a067c411"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.16687",
    "kind": "arxiv",
    "version": 2
  }
}