Pith Number

pith:ETJ5BPTS

pith:2009:ETJ5BPTSR6FNVBOKV5FHG5FSTS

not attested not anchored not stored refs pending

The enclosure method for inverse obstacle scattering problems with dynamical data over a finite time interval

Masaru Ikehata

arxiv:0907.0109 v2 · 2009-07-01 · 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{ETJ5BPTSR6FNVBOKV5FHG5FSTS}

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	2026-05-18T04:12:45.001380Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d3d0be728f8ada85caaf4a7374b29cb63cb5d9e2892fe6a8089146e02c9d65

Aliases

arxiv: 0907.0109 · arxiv_version: 0907.0109v2 · doi: 10.48550/arxiv.0907.0109 · pith_short_12: ETJ5BPTSR6FN · pith_short_16: ETJ5BPTSR6FNVBOK · pith_short_8: ETJ5BPTS

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/ETJ5BPTSR6FNVBOKV5FHG5FSTS \
  | 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: 24d3d0be728f8ada85caaf4a7374b29cb63cb5d9e2892fe6a8089146e02c9d65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50853b6815848850369ab14321e720e4c63b4105bcfde62035c071cfda6ccc3c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2009-07-01T10:07:45Z",
    "title_canon_sha256": "92b99f4941ff6af6ea1bdf74bf3dc8db44484f009a49a20801231383f199516e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0109",
    "kind": "arxiv",
    "version": 2
  }
}