Pith Number

pith:2ZHDR4I7

pith:2011:2ZHDR4I7VBDQZXOS7BBHNRK5VK

not attested not anchored not stored refs pending

Inverse obstacle scattering problems with a single incident wave and the logarithmic differential of the indicator function in the Enclosure Method

Masaru Ikehata

arxiv:1104.0463 v1 · 2011-04-04 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZHDR4I7VBDQZXOS7BBHNRK5VK}

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	2026-05-18T04:12:44.503419Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d64e38f11fa8470cddd2f84276c55daaa2c783230e97e67a1a4a52eaa684fc37

Aliases

arxiv: 1104.0463 · arxiv_version: 1104.0463v1 · doi: 10.48550/arxiv.1104.0463 · pith_short_12: 2ZHDR4I7VBDQ · pith_short_16: 2ZHDR4I7VBDQZXOS · pith_short_8: 2ZHDR4I7

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/2ZHDR4I7VBDQZXOS7BBHNRK5VK \
  | 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: d64e38f11fa8470cddd2f84276c55daaa2c783230e97e67a1a4a52eaa684fc37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce162883f8b5583bf1b2f0589afd77241702cef290cf2473080b746c561dbb2a",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-04-04T04:49:10Z",
    "title_canon_sha256": "6d12b4dbc365a7de793a7d512adc33571334e7cd81af5253934b9e5206a195a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0463",
    "kind": "arxiv",
    "version": 1
  }
}