Pith Number

pith:C24IZAOC

pith:2026:C24IZAOCCCRQRGAJOB45S2SC47

not attested not anchored not stored refs pending

Searching the Space of Feed-Forward Neural-Network Weight-Update Rules with Fixed Depth Symbolic Regression

Charles Brum, Edward Finkelstein

arxiv:2607.21855 v1 · 2026-07-23 · 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{C24IZAOCCCRQRGAJOB45S2SC47}

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	2026-07-27T00:20:24.500421Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

16b88c81c210a30898097079d96a42e7dbe6b5b692ed6427b6e10c46d2fcc7ae

Aliases

arxiv: 2607.21855 · arxiv_version: 2607.21855v1 · doi: 10.48550/arxiv.2607.21855 · pith_short_12: C24IZAOCCCRQ · pith_short_16: C24IZAOCCCRQRGAJ · pith_short_8: C24IZAOC

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/C24IZAOCCCRQRGAJOB45S2SC47 \
  | 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: 16b88c81c210a30898097079d96a42e7dbe6b5b692ed6427b6e10c46d2fcc7ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "36a4d2f86f88dddf9e98dca3f46908cc7bbb5eb7ce6bd325b871ddba49f30212",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-23T22:49:51Z",
    "title_canon_sha256": "de42b2fb612523e2109ef7aed427bb9666b1e0c68127f1077cc145ec9dbe4257"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.21855",
    "kind": "arxiv",
    "version": 1
  }
}