Pith Number

pith:TL7SF4FU

pith:2026:TL7SF4FUWJLD3KAO4A6F7GCTWM

not attested not anchored not stored refs pending

Fourier Neural Operators with Least-Squares Readout Refit for Learning Random Obstacle-to-Solution Maps

Chenhui Zhu, Fei Wang

arxiv:2606.29436 v1 · 2026-06-28 · math.NA · cs.LG · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TL7SF4FUWJLD3KAO4A6F7GCTWM}

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	2026-06-30T01:18:06.380196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9aff22f0b4b2563da80ee03c5f9853b304c6f9af76a8175635f865adfc7e7b13

Aliases

arxiv: 2606.29436 · arxiv_version: 2606.29436v1 · doi: 10.48550/arxiv.2606.29436 · pith_short_12: TL7SF4FUWJLD · pith_short_16: TL7SF4FUWJLD3KAO · pith_short_8: TL7SF4FU

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/TL7SF4FUWJLD3KAO4A6F7GCTWM \
  | 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: 9aff22f0b4b2563da80ee03c5f9853b304c6f9af76a8175635f865adfc7e7b13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b465c602c91069a2fc1c13f03f5992cee8b38eb99037834ba719cbadff02de1",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-28T14:53:37Z",
    "title_canon_sha256": "06db2918c0961c58639500499a61db62943e6a1fca4fe7c5491214cbd06bf5b2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.29436",
    "kind": "arxiv",
    "version": 1
  }
}