Pith Number

pith:52N7I5T4

pith:2025:52N7I5T4P2JSLEZTXHT7ELFS25

not attested not anchored not stored refs pending

MASS: Mathematical Data Selection via Skill Graphs for Pretraining Large Language Models

Chuxu Zhang, Jiazheng Li, Jun Zhou, Lu Yu, Qing Cui, Yanfang Ye, Zhiqiang Zhang

arxiv:2503.14917 v2 · 2025-03-19 · cs.CL · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52N7I5T4P2JSLEZTXHT7ELFS25}

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	2026-07-05T11:32:26.503129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee9bf4767c7e93259333b9e7f22cb2d74e196e2d4f935f2aa4d9f41d88b43d00

Aliases

arxiv: 2503.14917 · arxiv_version: 2503.14917v2 · doi: 10.48550/arxiv.2503.14917 · pith_short_12: 52N7I5T4P2JS · pith_short_16: 52N7I5T4P2JSLEZT · pith_short_8: 52N7I5T4

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/52N7I5T4P2JSLEZTXHT7ELFS25 \
  | 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: ee9bf4767c7e93259333b9e7f22cb2d74e196e2d4f935f2aa4d9f41d88b43d00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed9afb1fb8ac376d2b40657e9e273c4e322d67f8e3d79f2a88a4a89ad3d1c3dc",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-03-19T05:50:21Z",
    "title_canon_sha256": "1a8696c08d5001c6124402d4a4b00c3c3203635c4c5fb997f8232bbf3e9061ed"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.14917",
    "kind": "arxiv",
    "version": 2
  }
}