Pith Number

pith:IAJV2YYJ

pith:2015:IAJV2YYJVAJRZD66PAD2YGSR2Q

not attested not anchored not stored refs pending

KAM for the non-linear Beam equation 2: A normal form theorem

Beno\^it Gr\`ebert, L. Hakan Eliasson, Serge\"i B. Kuksin

arxiv:1502.02262 v1 · 2015-02-08 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IAJV2YYJVAJRZD66PAD2YGSR2Q}

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	2026-05-18T02:27:43.067154Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40135d6309a8131c8fde7807ac1a51d43c1e40414e1c50a0740103abe17020f6

Aliases

arxiv: 1502.02262 · arxiv_version: 1502.02262v1 · doi: 10.48550/arxiv.1502.02262 · pith_short_12: IAJV2YYJVAJR · pith_short_16: IAJV2YYJVAJRZD66 · pith_short_8: IAJV2YYJ

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/IAJV2YYJVAJRZD66PAD2YGSR2Q \
  | 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: 40135d6309a8131c8fde7807ac1a51d43c1e40414e1c50a0740103abe17020f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d00219425f035cded9612f18b0c365a16d5d567d6b5dd4b6eb7f908b0a39a15a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-02-08T15:17:06Z",
    "title_canon_sha256": "eb0c9c2be4bec82e5d63b64b494157834e48bb0de7758a7394906262a4d71a59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02262",
    "kind": "arxiv",
    "version": 1
  }
}