Pith Number

pith:U25UYAEB

pith:2019:U25UYAEBWTQEZ3FXLWMZ3YFDB4

not attested not anchored not stored refs pending

Elastic energy regularization for inverse obstacle scattering problems

Henrik Schumacher, Julian Eckhardt, Max Wardetzky, Ralf Hiptmair, Thorsten Hohage

arxiv:1903.05074 v1 · 2019-03-12 · math.NA · cs.NA · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U25UYAEBWTQEZ3FXLWMZ3YFDB4}

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	2026-06-04T20:14:12.688811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6bb4c0081b4e04cecb75d999de0a30f260fbe3214cf0838b30f62f1488d94a5

Aliases

arxiv: 1903.05074 · arxiv_version: 1903.05074v1 · doi: 10.48550/arxiv.1903.05074 · pith_short_12: U25UYAEBWTQE · pith_short_16: U25UYAEBWTQEZ3FX · pith_short_8: U25UYAEB

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/U25UYAEBWTQEZ3FXLWMZ3YFDB4 \
  | 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: a6bb4c0081b4e04cecb75d999de0a30f260fbe3214cf0838b30f62f1488d94a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60a1b68f7037baa679f39224e581ed9e6fbfa4594d42399e10554909a76169e9",
    "cross_cats_sorted": [
      "cs.NA",
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-12T17:48:45Z",
    "title_canon_sha256": "f0974254370024a25fcac9942a8450e955175293681fa20847e9ea2f110782c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05074",
    "kind": "arxiv",
    "version": 1
  }
}