Pith Number

pith:XYKVHFFR

pith:2025:XYKVHFFR4APJ7UL6DJLNMTNRMX

not attested not anchored not stored refs pending

Numerical Analysis of Unsupervised Learning Approaches for Parameter Identification in PDEs

Bangti Jin, Qimeng Quan, Siyu Cen, Zhi Zhou

arxiv:2508.15381 v1 · 2025-08-21 · math.NA · 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{XYKVHFFR4APJ7UL6DJLNMTNRMX}

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	2026-07-05T11:57:11.256092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be155394b1e01e9fd17e1a56d64db165dc6a5872db33c7c6bc539396920b3427

Aliases

arxiv: 2508.15381 · arxiv_version: 2508.15381v1 · doi: 10.48550/arxiv.2508.15381 · pith_short_12: XYKVHFFR4APJ · pith_short_16: XYKVHFFR4APJ7UL6 · pith_short_8: XYKVHFFR

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/XYKVHFFR4APJ7UL6DJLNMTNRMX \
  | 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: be155394b1e01e9fd17e1a56d64db165dc6a5872db33c7c6bc539396920b3427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6b6a5e91989f310dd3002f1f4e0a1f5ce8a4753c1a920e7aae274315881c33f",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-08-21T09:20:15Z",
    "title_canon_sha256": "a65f8b40b06aa59713565c537b0ee42797f33f2bfb2e9e9ce531044510d20a79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.15381",
    "kind": "arxiv",
    "version": 1
  }
}