Pith Number

pith:EYCVRPXE

pith:2018:EYCVRPXERNXYOU5N6GAFXIAGUF

not attested not anchored not stored refs pending

Integrable Hamiltonian systems with a periodic orbit or invariant torus unique in the whole phase space

Mikhail B. Sevryuk

arxiv:1808.03596 v1 · 2018-08-10 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EYCVRPXERNXYOU5N6GAFXIAGUF}

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	2026-05-17T23:46:09.553536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

260558bee48b6f8753adf1805ba006a16aa423d8e258d9d2647b8b94dd1bb305

Aliases

arxiv: 1808.03596 · arxiv_version: 1808.03596v1 · doi: 10.48550/arxiv.1808.03596 · pith_short_12: EYCVRPXERNXY · pith_short_16: EYCVRPXERNXYOU5N · pith_short_8: EYCVRPXE

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/EYCVRPXERNXYOU5N6GAFXIAGUF \
  | 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: 260558bee48b6f8753adf1805ba006a16aa423d8e258d9d2647b8b94dd1bb305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e37cb8058e0f80f67a4e604eb0737a672c855b27d08c46ea572d7ab04b56144",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-08-10T15:52:50Z",
    "title_canon_sha256": "5b1d64e35b94d755bc3a722e7953973809af8c20ea24e42c550d1e4cb23a6e04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03596",
    "kind": "arxiv",
    "version": 1
  }
}