Pith Number

pith:Z7ZDEVYY

pith:2009:Z7ZDEVYY3JHYJBYDWR7WCV6XBI

not attested not anchored not stored refs pending

Hill's Equation with Random Forcing Parameters: The Limit of Delta Function Barriers

Anthony M. Bloch, Fred C. Adams

arxiv:0906.1954 v1 · 2009-06-10 · math-ph · astro-ph.CO · 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{Z7ZDEVYY3JHYJBYDWR7WCV6XBI}

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	2026-05-18T02:13:20.950092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cff2325718da4f848703b47f6157d70a04a7b3cec914dc99f63f73ff8ebd118f

Aliases

arxiv: 0906.1954 · arxiv_version: 0906.1954v1 · doi: 10.48550/arxiv.0906.1954 · pith_short_12: Z7ZDEVYY3JHY · pith_short_16: Z7ZDEVYY3JHYJBYD · pith_short_8: Z7ZDEVYY

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/Z7ZDEVYY3JHYJBYDWR7WCV6XBI \
  | 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: cff2325718da4f848703b47f6157d70a04a7b3cec914dc99f63f73ff8ebd118f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b528b8596c571bafd7f36738b4e6c76c355c9b40094253a746d323af605ef84",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2009-06-10T15:26:13Z",
    "title_canon_sha256": "dc3dda45a4050f1cb65673ed0cf054799f01ee75b8e962fa0ddcdefe889d2a5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.1954",
    "kind": "arxiv",
    "version": 1
  }
}