Pith Number

pith:GD4SG6SV

pith:2026:GD4SG6SVE33BOFG5H3BH727A5O

not attested not anchored not stored refs pending

Numerical Spectrum Linking: Identification of Governing PDE via Koopman-Chebyshev Approximation with Resampling

Phonepaserth Sisaykeo, Shogo Muramatsu

arxiv:2607.27728 v1 · 2026-07-30 · math.NA · cs.NA · eess.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GD4SG6SVE33BOFG5H3BH727A5O}

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	2026-07-31T01:30:04.418943Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

30f9237a5526f61714dd3ec27febe0ebab0d8b53e2d4ee3024c14779e2a571ca

Aliases

arxiv: 2607.27728 · arxiv_version: 2607.27728v1 · doi: 10.48550/arxiv.2607.27728 · pith_short_12: GD4SG6SVE33B · pith_short_16: GD4SG6SVE33BOFG5 · pith_short_8: GD4SG6SV

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/GD4SG6SVE33BOFG5H3BH727A5O \
  | 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: 30f9237a5526f61714dd3ec27febe0ebab0d8b53e2d4ee3024c14779e2a571ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3977931fe2be35f587263ae02b185cad5f9804740568e97a8a95c5da01388871",
    "cross_cats_sorted": [
      "cs.NA",
      "eess.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-30T06:08:45Z",
    "title_canon_sha256": "897013818b1d1d7b65ef6857566ce11b6a23f353f6f0cc860866c4d524de6c0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.27728",
    "kind": "arxiv",
    "version": 1
  }
}