Pith Number

pith:HGTBOO4V

pith:2011:HGTBOO4VILNMJENMGU3W3UH3YI

not attested not anchored not stored refs pending

Solving an inverse problem for the wave equation by using a minimization algorithm and time-reversed measurements

Lauri Oksanen

arxiv:1101.4836 v1 · 2011-01-25 · 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{HGTBOO4VILNMJENMGU3W3UH3YI}

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	2026-05-18T04:30:58.899475Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39a6173b9542dac491ac35376dd0fbc226d1f0f446192215b5eb35fb734646a5

Aliases

arxiv: 1101.4836 · arxiv_version: 1101.4836v1 · doi: 10.48550/arxiv.1101.4836 · pith_short_12: HGTBOO4VILNM · pith_short_16: HGTBOO4VILNMJENM · pith_short_8: HGTBOO4V

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/HGTBOO4VILNMJENMGU3W3UH3YI \
  | 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: 39a6173b9542dac491ac35376dd0fbc226d1f0f446192215b5eb35fb734646a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4178f4af41ccc618a5e644d7cf2e2317bb6486142896c7240f2d62b50e582ecd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-01-25T14:57:33Z",
    "title_canon_sha256": "8d91f94fb20c269ae61d0c02f51bd282f23293a2344b164eda48f4c8e598d5c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4836",
    "kind": "arxiv",
    "version": 1
  }
}