Pith Number

pith:BLOJXET3

pith:2011:BLOJXET3OKP3DCGZGA5YQGGDJS

not attested not anchored not stored refs pending

Inverse obstacle problem for the non-stationary wave equation with an unknown background

Lauri Oksanen

arxiv:1106.3204 v1 · 2011-06-16 · 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{BLOJXET3OKP3DCGZGA5YQGGDJS}

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	2026-05-18T04:19:53.998855Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0adc9b927b729fb188d9303b8818c34c947d3f79ca87a276b80f25cbb50fbaf2

Aliases

arxiv: 1106.3204 · arxiv_version: 1106.3204v1 · doi: 10.48550/arxiv.1106.3204 · pith_short_12: BLOJXET3OKP3 · pith_short_16: BLOJXET3OKP3DCGZ · pith_short_8: BLOJXET3

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/BLOJXET3OKP3DCGZGA5YQGGDJS \
  | 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: 0adc9b927b729fb188d9303b8818c34c947d3f79ca87a276b80f25cbb50fbaf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17901f9ff9743bbdc3e60b37c7fdaa0c96682e5abd86c06c095ef52baa6e3119",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-06-16T11:41:09Z",
    "title_canon_sha256": "0efab50b780c5279bf8dcc8a66d5e79fed207b847fb03bf1425c8e0b8c5d3240"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3204",
    "kind": "arxiv",
    "version": 1
  }
}