Pith Number

pith:KSG4JZ42

pith:2017:KSG4JZ424J72EYQUCJJQK3MXIG

not attested not anchored not stored refs pending

Partial preservation of frequencies and Floquet exponents of invariant tori in the reversible KAM context 2

Mikhail B. Sevryuk

arxiv:1709.02333 v1 · 2017-09-07 · 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{KSG4JZ424J72EYQUCJJQK3MXIG}

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	2026-05-18T00:19:41.900375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

548dc4e79ae27fa262141253056d97419c083c476b73b936f4f94f9a979a3bd5

Aliases

arxiv: 1709.02333 · arxiv_version: 1709.02333v1 · doi: 10.48550/arxiv.1709.02333 · pith_short_12: KSG4JZ424J72 · pith_short_16: KSG4JZ424J72EYQU · pith_short_8: KSG4JZ42

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/KSG4JZ424J72EYQUCJJQK3MXIG \
  | 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: 548dc4e79ae27fa262141253056d97419c083c476b73b936f4f94f9a979a3bd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14f8cc2f99003886e82d14a11474d61e6da0bee2161dadeb461568740f68de36",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2017-09-07T16:16:43Z",
    "title_canon_sha256": "2f4f9a272e3856b2990defb53ded2c63d8110f2c31812f6ccfc5d590992c2837"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02333",
    "kind": "arxiv",
    "version": 1
  }
}