Pith Number

pith:B6KJWSWY

pith:2008:B6KJWSWYWEGBTKF7467TFIOPZJ

not attested not anchored not stored refs pending

Nonautonomous Hamiltonian Systems and Morales-Ramis Theory I. The Case $\ddot{x}=f(x,t)$

Primitivo B. Acosta-Humanez

arxiv:0808.3028 v2 · 2008-08-22 · 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{B6KJWSWYWEGBTKF7467TFIOPZJ}

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	2026-05-18T04:01:23.893904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f949b4ad8b10c19a8bfe7bf32a1cfca5a3d924394a3bb9b580382312f2e8b8f

Aliases

arxiv: 0808.3028 · arxiv_version: 0808.3028v2 · doi: 10.48550/arxiv.0808.3028 · pith_short_12: B6KJWSWYWEGB · pith_short_16: B6KJWSWYWEGBTKF7 · pith_short_8: B6KJWSWY

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/B6KJWSWYWEGBTKF7467TFIOPZJ \
  | 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: 0f949b4ad8b10c19a8bfe7bf32a1cfca5a3d924394a3bb9b580382312f2e8b8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "621b462b2b4f7a96c82794291531d1873ffb36cc76ae3acc64e1af3dfb1dfa55",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2008-08-22T03:39:21Z",
    "title_canon_sha256": "441d9e0a0155a85f56ec98a96cb85c2dce190beb03db27323bc09dd703e33929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3028",
    "kind": "arxiv",
    "version": 2
  }
}