Pith Number

pith:ZIT4HLVS

pith:2022:ZIT4HLVSDFAJ6DLGFLHKARL27D

not attested not anchored not stored refs pending

New criterions on nonexistence of periodic orbits of planar dynamical systems and their applications

Hao Yang, Hebai Chen, Rui Zhang, Xiang Zhang

arxiv:2203.00921 v1 · 2022-03-02 · 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{ZIT4HLVSDFAJ6DLGFLHKARL27D}

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	2026-07-05T04:01:35.368198Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca27c3aeb219409f0d662acea0457af8cdc4cf33dff5ed1f9d4116da0f07ed48

Aliases

arxiv: 2203.00921 · arxiv_version: 2203.00921v1 · doi: 10.48550/arxiv.2203.00921 · pith_short_12: ZIT4HLVSDFAJ · pith_short_16: ZIT4HLVSDFAJ6DLG · pith_short_8: ZIT4HLVS

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/ZIT4HLVSDFAJ6DLGFLHKARL27D \
  | 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: ca27c3aeb219409f0d662acea0457af8cdc4cf33dff5ed1f9d4116da0f07ed48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d3ca779ea2f89389832d7c87606d9ed8eeefcfff3b014d7da97a2286077be50",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2022-03-02T08:09:32Z",
    "title_canon_sha256": "e83faf57939e0f1e992bbef9b0a2234c0383277dda54d22f53cfbceab347c08f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.00921",
    "kind": "arxiv",
    "version": 1
  }
}