Pith Number

pith:OU7NEEU2

pith:2021:OU7NEEU2OOIITXBXRMHOPZB2EI

not attested not anchored not stored refs pending

Nearly-periodic maps and geometric integration of noncanonical Hamiltonian systems

E. Hirvijoki, J. W. Burby, M. Leok

arxiv:2112.08527 v1 · 2021-12-15 · math.DS · 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{OU7NEEU2OOIITXBXRMHOPZB2EI}

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	2026-07-05T03:41:30.110122Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

753ed2129a739089dc378b0ee7e43a223409e7d74447114dc1e30e6714505271

Aliases

arxiv: 2112.08527 · arxiv_version: 2112.08527v1 · doi: 10.48550/arxiv.2112.08527 · pith_short_12: OU7NEEU2OOII · pith_short_16: OU7NEEU2OOIITXBX · pith_short_8: OU7NEEU2

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/OU7NEEU2OOIITXBXRMHOPZB2EI \
  | 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: 753ed2129a739089dc378b0ee7e43a223409e7d74447114dc1e30e6714505271

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e2a5df2c2407c8f71117a07402c9fdeab7c9d30a9c7fcbea3fb2743ab57774e",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2021-12-15T23:26:56Z",
    "title_canon_sha256": "e6237d14aceaabbc2c1c53bf711bbbe13d1adb28d4da8ba2c6e2ffae84afc8dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.08527",
    "kind": "arxiv",
    "version": 1
  }
}