Pith Number

pith:OX6JIMVT

pith:2026:OX6JIMVT2P3GHSKFMAI5NUGD3P

not attested not anchored not stored refs pending

Data-driven inference of Hopf normal form representations from oscillatory time series

Ryota Kobayashi, Shinsuke Koyama

arxiv:2606.26847 v1 · 2026-06-25 · nlin.AO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OX6JIMVT2P3GHSKFMAI5NUGD3P}

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	2026-06-26T01:16:01.523689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75fc9432b3d3f663c9456011d6d0c3dbf7c9daf442ac0db78ea412c3274d86ac

Aliases

arxiv: 2606.26847 · arxiv_version: 2606.26847v1 · doi: 10.48550/arxiv.2606.26847 · pith_short_12: OX6JIMVT2P3G · pith_short_16: OX6JIMVT2P3GHSKF · pith_short_8: OX6JIMVT

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/OX6JIMVT2P3GHSKFMAI5NUGD3P \
  | 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: 75fc9432b3d3f663c9456011d6d0c3dbf7c9daf442ac0db78ea412c3274d86ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4497f904a395fae8991d28130b46aa6f0aea53f0ce8f88267266a28645f83436",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "nlin.AO",
    "submitted_at": "2026-06-25T10:35:24Z",
    "title_canon_sha256": "cdca829a0bb8e3fc13f79b34d0b4f688f752e009b91d8688979a0b805e7c7438"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.26847",
    "kind": "arxiv",
    "version": 1
  }
}