Pith Number

pith:YRBPZUZO

pith:2015:YRBPZUZOZPE7OZWFGHZLPCE7IH

not attested not anchored not stored refs pending

Energy invariant for shallow water waves and the Korteweg -- de Vries equation. Is energy always an invariant?

Anna Karczewska, Eryk Infeld, Piotr Rozmej

arxiv:1503.09089 v3 · 2015-03-31 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YRBPZUZOZPE7OZWFGHZLPCE7IH}

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	2026-05-18T01:26:43.188260Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c442fcd32ecbc9f766c531f2b7889f41d51584d086262bafbb0de06e0bb0e270

Aliases

arxiv: 1503.09089 · arxiv_version: 1503.09089v3 · doi: 10.48550/arxiv.1503.09089 · pith_short_12: YRBPZUZOZPE7 · pith_short_16: YRBPZUZOZPE7OZWF · pith_short_8: YRBPZUZO

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/YRBPZUZOZPE7OZWFGHZLPCE7IH \
  | 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: c442fcd32ecbc9f766c531f2b7889f41d51584d086262bafbb0de06e0bb0e270

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f3d737d04e738d52eaf6f4abbdd3fdbad455fe6cb96de49c9eb40bbe4afe1e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2015-03-31T15:32:38Z",
    "title_canon_sha256": "87a6f2f14266403980adecc00a2697c497be30a0602696552dcebf5e49c579ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.09089",
    "kind": "arxiv",
    "version": 3
  }
}