Pith Number

pith:4O4DZP2O

pith:2015:4O4DZP2OSK3LHKPR4IU3LIROIB

not attested not anchored not stored refs pending

Normal form approach to global well-posedness of the quadratic derivative nonlinear Schr\"odinger equation on the circle

Jaywan Chung, Soonsik Kwon, Tadahiro Oh, Zihua Guo

arxiv:1509.08139 v2 · 2015-09-27 · math.AP · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4O4DZP2OSK3LHKPR4IU3LIROIB}

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	2026-05-18T01:02:13.668908Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3b83cbf4e92b6b3a9f1e229b5a22e406fe2e63a8cdceb96d99616713d7f46f8

Aliases

arxiv: 1509.08139 · arxiv_version: 1509.08139v2 · doi: 10.48550/arxiv.1509.08139 · pith_short_12: 4O4DZP2OSK3L · pith_short_16: 4O4DZP2OSK3LHKPR · pith_short_8: 4O4DZP2O

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/4O4DZP2OSK3LHKPR4IU3LIROIB \
  | 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: e3b83cbf4e92b6b3a9f1e229b5a22e406fe2e63a8cdceb96d99616713d7f46f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "095fbc865f1f84134338f7431208d35d3b03955d45373e3d1b69ff9e521ce091",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-09-27T20:44:59Z",
    "title_canon_sha256": "cee2283bc981fb8391cefeb5b0e7f6efa55616ba71f883365aa4fbd3bc6f4088"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.08139",
    "kind": "arxiv",
    "version": 2
  }
}