Pith Number

pith:M7NRHAFW

pith:2018:M7NRHAFWNDNWFDWE7BB5N6V2KA

not attested not anchored not stored refs pending

The Fermi-Pasta-Ulam problem and its underlying integrable dynamics: an approach through Lyapunov Exponents

A. Ponno, G. Benettin, S. Pasquali

arxiv:1801.05199 v1 · 2018-01-16 · math.DS · cond-mat.stat-mech

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M7NRHAFWNDNWFDWE7BB5N6V2KA}

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	2026-05-18T00:18:11.683608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67db1380b668db628ec4f843d6faba500372dcfbb2a6dbe980ff13d512633e81

Aliases

arxiv: 1801.05199 · arxiv_version: 1801.05199v1 · doi: 10.48550/arxiv.1801.05199 · pith_short_12: M7NRHAFWNDNW · pith_short_16: M7NRHAFWNDNWFDWE · pith_short_8: M7NRHAFW

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/M7NRHAFWNDNWFDWE7BB5N6V2KA \
  | 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: 67db1380b668db628ec4f843d6faba500372dcfbb2a6dbe980ff13d512633e81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fb5d86da863c05f42f176a0258197fb8661bafb494e9ca98d03415339fc4ea5",
    "cross_cats_sorted": [
      "cond-mat.stat-mech"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-01-16T10:43:06Z",
    "title_canon_sha256": "39f1461120c66660b30a7b148b3a528f22750588a1dfd5cbb2fb987ff37f81e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.05199",
    "kind": "arxiv",
    "version": 1
  }
}