Pith Number

pith:UNWR6JUL

pith:2019:UNWR6JULZGKZ5ZYKIGVPWVXI7B

not attested not anchored not stored refs pending

On quasi-reversibility solutions to the Cauchy problem for the Laplace equation: regularity and error estimates

Laurent Bourgeois, Lucas Chesnel

arxiv:1906.08700 v1 · 2019-06-20 · math.AP · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNWR6JULZGKZ5ZYKIGVPWVXI7B}

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	2026-05-17T23:42:49.535824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a36d1f268bc9959ee70a41aafb56e8f8491c8c7e4e7ed8d4cf72f4c7bc266240

Aliases

arxiv: 1906.08700 · arxiv_version: 1906.08700v1 · doi: 10.48550/arxiv.1906.08700 · pith_short_12: UNWR6JULZGKZ · pith_short_16: UNWR6JULZGKZ5ZYK · pith_short_8: UNWR6JUL

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/UNWR6JULZGKZ5ZYKIGVPWVXI7B \
  | 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: a36d1f268bc9959ee70a41aafb56e8f8491c8c7e4e7ed8d4cf72f4c7bc266240

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47cd40b421e6deb04616c80d243ce1aef0397bffd4a263b7ccc1c3fa112d804f",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-06-20T15:42:47Z",
    "title_canon_sha256": "715bbcabb795268faa4d3d3cf5b1ca2b27840fba4860e52b569753c2651b982c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.08700",
    "kind": "arxiv",
    "version": 1
  }
}