Pith Number

pith:4QI547XY

pith:2001:4QI547XYPPGWFLMBJPVBE377NA

not attested not anchored not stored refs pending

Direction reversing travelling waves in the Fermi-Pasta-Ulam chain

Bob Rink

arxiv:nlin/0110015 v1 · 2001-10-09 · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4QI547XYPPGWFLMBJPVBE377NA}

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	2026-05-18T01:38:21.692948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e411de7ef87bcd62ad814bea126fff682dc85ea960435312aa349bee2ebf81df

Aliases

arxiv: nlin/0110015 · arxiv_version: nlin/0110015v1 · doi: 10.48550/arxiv.nlin/0110015 · pith_short_12: 4QI547XYPPGW · pith_short_16: 4QI547XYPPGWFLMB · pith_short_8: 4QI547XY

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/4QI547XYPPGWFLMBJPVBE377NA \
  | 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: e411de7ef87bcd62ad814bea126fff682dc85ea960435312aa349bee2ebf81df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20091dff23a7d6ddb379d9681df545f95cf3830d78bb60248d382bcc347f9265",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "nlin.SI",
    "submitted_at": "2001-10-09T10:54:54Z",
    "title_canon_sha256": "6480117ed0f105aa4c41a77b9475a8426fae196bd6fbbd50fd6de150f1f47f7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "nlin/0110015",
    "kind": "arxiv",
    "version": 1
  }
}