Pith Number

pith:5UCF4LJ3

pith:2026:5UCF4LJ3IBUJ7CGMZC2M27F3FE

not attested not anchored not stored refs pending

Effective vocabulary expansion of multilingual language models for extremely low-resource languages

Jianyu Zheng

arxiv:2602.09388 v2 · 2026-02-10 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5UCF4LJ3IBUJ7CGMZC2M27F3FE}

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	2026-06-04T01:08:41.687439Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed045e2d3b40689f88ccc8b4cd7cbb292abf9b12a25b0aba03caa2cfbea87dd8

Aliases

arxiv: 2602.09388 · arxiv_version: 2602.09388v2 · doi: 10.48550/arxiv.2602.09388 · pith_short_12: 5UCF4LJ3IBUJ · pith_short_16: 5UCF4LJ3IBUJ7CGM · pith_short_8: 5UCF4LJ3

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/5UCF4LJ3IBUJ7CGMZC2M27F3FE \
  | 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: ed045e2d3b40689f88ccc8b4cd7cbb292abf9b12a25b0aba03caa2cfbea87dd8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "453bd1651a5fbb0871f479d98aee6347cab7f1e98e64e8b774b753862e6938d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-02-10T03:57:07Z",
    "title_canon_sha256": "334195ff0f8bbb4c7f9740c16ee8386ea6810629c1c867eb2319a9dd4a4f8e18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.09388",
    "kind": "arxiv",
    "version": 2
  }
}