Pith Number

pith:NGG44SS4

pith:2026:NGG44SS4VU2G5CCMCFVW67O3Z4

not attested not anchored not stored refs pending

Hermite spectral approximation for functions with endpoint singularities using exponential transforms

Haiyong Wang

arxiv:2607.12648 v1 · 2026-07-14 · 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{NGG44SS4VU2G5CCMCFVW67O3Z4}

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	2026-07-15T01:22:08.726786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

698dce4a5cad346e884c116b6f7ddbcf257dd9d0703a8e69b42ff924f134a347

Aliases

arxiv: 2607.12648 · arxiv_version: 2607.12648v1 · doi: 10.48550/arxiv.2607.12648 · pith_short_12: NGG44SS4VU2G · pith_short_16: NGG44SS4VU2G5CCM · pith_short_8: NGG44SS4

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/NGG44SS4VU2G5CCMCFVW67O3Z4 \
  | 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: 698dce4a5cad346e884c116b6f7ddbcf257dd9d0703a8e69b42ff924f134a347

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9e0467aa148a76e04fc1d0a0875df9ea09670e39e2a88f004550e35003b1610",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-14T11:29:31Z",
    "title_canon_sha256": "ba754c3aa84a5bd6cd12d698c1f406891d6d4fa92a773d1860e8cf425839788d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.12648",
    "kind": "arxiv",
    "version": 1
  }
}