Pith Number

pith:X7JFBMWE

pith:2017:X7JFBMWERLVMX7NCTHPHSEDXMM

not attested not anchored not stored refs pending

A fast direct imaging method for the inverse obstacle scattering problem with nonlinear point scatterers

Jun Lai, Ming Li, Peijun Li, Wei Li

arxiv:1706.06949 v1 · 2017-06-21 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X7JFBMWERLVMX7NCTHPHSEDXMM}

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	2026-05-18T00:41:56.410578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfd250b2c48aeacbfda299de7910776320a3ccb81b08f1d89a444f81284a620e

Aliases

arxiv: 1706.06949 · arxiv_version: 1706.06949v1 · doi: 10.48550/arxiv.1706.06949 · pith_short_12: X7JFBMWERLVM · pith_short_16: X7JFBMWERLVMX7NC · pith_short_8: X7JFBMWE

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/X7JFBMWERLVMX7NCTHPHSEDXMM \
  | 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: bfd250b2c48aeacbfda299de7910776320a3ccb81b08f1d89a444f81284a620e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1844c6e8419a3ca5c03ac4d7520a6aa749efa04b6b5c3fe9c1c55f81397e1c4e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-06-21T15:09:27Z",
    "title_canon_sha256": "e868e3483e9cdbe42e3dbd3f4b74a7f42cb017a164f65b04132b080d0faee113"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.06949",
    "kind": "arxiv",
    "version": 1
  }
}