Pith Number

pith:VRYKKWWZ

pith:2016:VRYKKWWZAQSUU2UGXL6V2QYGJS

not attested not anchored not stored refs pending

Integrability and strong normal forms for non-autonomous systems in a neighbourhood of an equilibrium

Alessandro Fortunati, Stephen Wiggins

arxiv:1601.00431 v1 · 2016-01-04 · 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{VRYKKWWZAQSUU2UGXL6V2QYGJS}

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	2026-05-18T01:03:59.650419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac70a55ad904254a6a86bafd5d43064cb52627e1c8b27a1ba655c021c7bf06fa

Aliases

arxiv: 1601.00431 · arxiv_version: 1601.00431v1 · doi: 10.48550/arxiv.1601.00431 · pith_short_12: VRYKKWWZAQSU · pith_short_16: VRYKKWWZAQSUU2UG · pith_short_8: VRYKKWWZ

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/VRYKKWWZAQSUU2UGXL6V2QYGJS \
  | 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: ac70a55ad904254a6a86bafd5d43064cb52627e1c8b27a1ba655c021c7bf06fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "91fcdc3adc66bc1c1d6fc2be0db6d21a42e4d732f7a0f6c4b686e74f233fbcff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2016-01-04T09:55:23Z",
    "title_canon_sha256": "a655401f38c469ed6bdddaf880f74b23cb3438efc55ee0ff51010fea7dc26db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.00431",
    "kind": "arxiv",
    "version": 1
  }
}