Pith Number

pith:AFQPW437

pith:2025:AFQPW4374IZEKAQIKWGSNXOKYO

not attested not anchored not stored refs pending

Gradient Descent as a Shrinkage Operator for Spectral Bias

Simon Lucey

arxiv:2504.18207 v1 · 2025-04-25 · cs.LG · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AFQPW4374IZEKAQIKWGSNXOKYO}

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	2026-07-05T10:54:03.750777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0160fb737fe232450208558d26ddcac3bae29310cca2574be9107c59a1161963

Aliases

arxiv: 2504.18207 · arxiv_version: 2504.18207v1 · doi: 10.48550/arxiv.2504.18207 · pith_short_12: AFQPW4374IZE · pith_short_16: AFQPW4374IZEKAQI · pith_short_8: AFQPW437

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/AFQPW4374IZEKAQIKWGSNXOKYO \
  | 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: 0160fb737fe232450208558d26ddcac3bae29310cca2574be9107c59a1161963

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51b78ffaf312d3239143ceba2724230ec82fc596685aa54e9564a587cac1d4af",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-04-25T09:36:17Z",
    "title_canon_sha256": "4df00146dead5bfd0809b38303b3ee5d64cf85f20bad2fdc4acae6b24fa28cfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.18207",
    "kind": "arxiv",
    "version": 1
  }
}