Pith Number

pith:7EAMS6TU

pith:2008:7EAMS6TUEZUZ2DPEX4YGR4Z57U

not attested not anchored not stored refs pending

Rayleigh-Ritz variation method and connected-moments polynomial approach

Francisco M. Fernandez

arxiv:0807.1442 v1 · 2008-07-09 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7EAMS6TUEZUZ2DPEX4YGR4Z57U}

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	2026-05-18T02:15:45.451348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f900c97a7426699d0de4bf3068f33dfd1a2855b9dc84a8ca812a51eae4a61800

Aliases

arxiv: 0807.1442 · arxiv_version: 0807.1442v1 · doi: 10.48550/arxiv.0807.1442 · pith_short_12: 7EAMS6TUEZUZ · pith_short_16: 7EAMS6TUEZUZ2DPE · pith_short_8: 7EAMS6TU

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/7EAMS6TUEZUZ2DPEX4YGR4Z57U \
  | 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: f900c97a7426699d0de4bf3068f33dfd1a2855b9dc84a8ca812a51eae4a61800

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa2aea244cf35772fc61114b9428e8edf0421f910bdf6985bc4d4ad455e5510f",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-07-09T13:02:19Z",
    "title_canon_sha256": "2e5ccd21f5d152f3a05a13a2907cd8b06f2231b15e2c2e91f0d08600ff3d7bfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.1442",
    "kind": "arxiv",
    "version": 1
  }
}