Pith Number

pith:BXBZXRDT

pith:2019:BXBZXRDTGG55JEFBTLJPQYYVYO

not attested not anchored not stored refs pending

The $\beta$ Fermi-Pasta-Ulam-Tsingou Recurrence Problem

David K. Campbell, Kevin A. Reiss, Salvatore D. Pace

arxiv:1908.00564 v1 · 2019-08-01 · nlin.PS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BXBZXRDTGG55JEFBTLJPQYYVYO}

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	2026-07-05T00:23:06.461434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0dc39bc47331bbd490a19ad2f86315c39cec65475d938a848d3279c14c1b970d

Aliases

arxiv: 1908.00564 · arxiv_version: 1908.00564v1 · doi: 10.48550/arxiv.1908.00564 · pith_short_12: BXBZXRDTGG55 · pith_short_16: BXBZXRDTGG55JEFB · pith_short_8: BXBZXRDT

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/BXBZXRDTGG55JEFBTLJPQYYVYO \
  | 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: 0dc39bc47331bbd490a19ad2f86315c39cec65475d938a848d3279c14c1b970d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cb0b378b8ba0baed6eaff6e7d5634a65de6f58bc36eed882ddb897271268109",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.PS",
    "submitted_at": "2019-08-01T18:14:45Z",
    "title_canon_sha256": "879e064cfaccb25119222ce6839eaa23f6e73e9f5cc436e5337b7962ca3e8ea9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00564",
    "kind": "arxiv",
    "version": 1
  }
}