Pith Number

pith:DEI67OIX

pith:2011:DEI67OIXHLACYYKG5J3HOLCWJG

not attested not anchored not stored refs pending

A note on the null condition for quadratic nonlinear Klein-Gordon systems in two space dimensions

Hideaki Sunagawa, Soichiro Katayama, Tohru Ozawa

arxiv:1105.1952 v1 · 2011-05-10 · 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{DEI67OIXHLACYYKG5J3HOLCWJG}

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	2026-05-18T04:22:30.219008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1911efb9173ac02c6146ea76772c5649b33c9ad67d0deb2b1760f9602322b549

Aliases

arxiv: 1105.1952 · arxiv_version: 1105.1952v1 · doi: 10.48550/arxiv.1105.1952 · pith_short_12: DEI67OIXHLAC · pith_short_16: DEI67OIXHLACYYKG · pith_short_8: DEI67OIX

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/DEI67OIXHLACYYKG5J3HOLCWJG \
  | 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: 1911efb9173ac02c6146ea76772c5649b33c9ad67d0deb2b1760f9602322b549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "645e49094f5c0891dd3c21afe6cf664e785a9b8c2e5abb73253d33e50edf7805",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-05-10T14:04:30Z",
    "title_canon_sha256": "fa26accb0a909b00749fe57db0be9a2bfce1fb797d6b72cef5533f7ea9c75d33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1952",
    "kind": "arxiv",
    "version": 1
  }
}