Pith Number

pith:WUHG3US3

pith:2018:WUHG3US3HZ7GL4BN4OYIAJU4JH

not attested not anchored not stored refs pending

Logarithmic Stability for Coefficients Inverse Problem of Coupled Schr\"{o}dinger Equations

Fangfang Dou, Masahiro Yamamoto

arxiv:1812.07820 v1 · 2018-12-19 · 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{WUHG3US3HZ7GL4BN4OYIAJU4JH}

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	2026-05-17T23:39:55.541686Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b50e6dd25b3e7e65f02de3b080269c49d2f18b04b23ef390c729abc63988d23f

Aliases

arxiv: 1812.07820 · arxiv_version: 1812.07820v1 · doi: 10.48550/arxiv.1812.07820 · pith_short_12: WUHG3US3HZ7G · pith_short_16: WUHG3US3HZ7GL4BN · pith_short_8: WUHG3US3

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/WUHG3US3HZ7GL4BN4OYIAJU4JH \
  | 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: b50e6dd25b3e7e65f02de3b080269c49d2f18b04b23ef390c729abc63988d23f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbcd2b53e32b8962e4f012f00f98461332e1769ffd046c6f57bae26c9549b7ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-12-19T09:00:07Z",
    "title_canon_sha256": "332280af835b3a24d4347e0a1ef4604c0bbe16ecf224f47b5de182ecaec9ffc5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.07820",
    "kind": "arxiv",
    "version": 1
  }
}