Pith Number

pith:4TEC3YFB

pith:2024:4TEC3YFBJU433BIFWJOOZBCWTO

not attested not anchored not stored refs pending

Prove Symbolic Regression is NP-hard by Symbol Graph

Bozhou Tian, Jake Luo, Jinglu Song, Jingwen Zhang, Qiang Lu, Zhiguang Wang

arxiv:2404.13820 v1 · 2024-04-22 · cs.CC · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4TEC3YFBJU433BIFWJOOZBCWTO}

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.

Cited by

1 paper in Pith

FePySR: A Neural Feature Extraction Framework for Efficient and Scalable Symbolic Regression

Receipt and verification

First computed	2026-07-05T08:10:37.844445Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4c82de0a14d39bd8505b25cec84569b8e05d474b2c31cdc1f94d51ac8473cbc

Aliases

arxiv: 2404.13820 · arxiv_version: 2404.13820v1 · doi: 10.48550/arxiv.2404.13820 · pith_short_12: 4TEC3YFBJU43 · pith_short_16: 4TEC3YFBJU433BIF · pith_short_8: 4TEC3YFB

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/4TEC3YFBJU433BIFWJOOZBCWTO \
  | 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: e4c82de0a14d39bd8505b25cec84569b8e05d474b2c31cdc1f94d51ac8473cbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c41f6cdab1777b1936d4677429db3b5f8428d81169e801e11043ef2e5a18dcf4",
    "cross_cats_sorted": [
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2024-04-22T01:48:58Z",
    "title_canon_sha256": "8c8c3efa1421929e349ff0bdca64b94c622956984570db35e22ebbd41049f6b8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.13820",
    "kind": "arxiv",
    "version": 1
  }
}