Pith Number

pith:QQQMNPOY

pith:2007:QQQMNPOYGHDZSLCS3MMIM6ER2H

not attested not anchored not stored refs pending

Quadrature formulas for the Laplace and Mellin transforms

Francisco Mejia, Rafael G. Campos

arxiv:0704.2842 v1 · 2007-04-21 · 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{QQQMNPOYGHDZSLCS3MMIM6ER2H}

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	2026-06-03T22:06:00.591622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8420c6bdd831c7992c52db18867891d1c275fca973610a791c106d545878ea80

Aliases

arxiv: 0704.2842 · arxiv_version: 0704.2842v1 · doi: 10.48550/arxiv.0704.2842 · pith_short_12: QQQMNPOYGHDZ · pith_short_16: QQQMNPOYGHDZSLCS · pith_short_8: QQQMNPOY

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/QQQMNPOYGHDZSLCS3MMIM6ER2H \
  | 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: 8420c6bdd831c7992c52db18867891d1c275fca973610a791c106d545878ea80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e76314dc6859d4c64a6ebf6afd4aea4219ea8ae653927e84859b6c5d019c006",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "",
    "primary_cat": "math.NA",
    "submitted_at": "2007-04-21T17:55:13Z",
    "title_canon_sha256": "e5a5d0c9427884a9044cb471400860689ffc2ed340609bad3d368f173878f7a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.2842",
    "kind": "arxiv",
    "version": 1
  }
}