Pith Number

pith:KZ4FGNZZ

pith:2019:KZ4FGNZZOCVXYO7U3CCQRLX3XT

not attested not anchored not stored refs pending

The reconstruction of a wave equation from one side measurement

Amin Boumenir, Vu Kim Tuan

arxiv:1901.02138 v1 · 2019-01-08 · 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{KZ4FGNZZOCVXYO7U3CCQRLX3XT}

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	2026-05-17T23:56:43.929782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

567853373970ab7c3bf4d88508aefbbcec161a7205c715e1afbc3ede33348543

Aliases

arxiv: 1901.02138 · arxiv_version: 1901.02138v1 · doi: 10.48550/arxiv.1901.02138 · pith_short_12: KZ4FGNZZOCVX · pith_short_16: KZ4FGNZZOCVXYO7U · pith_short_8: KZ4FGNZZ

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/KZ4FGNZZOCVXYO7U3CCQRLX3XT \
  | 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: 567853373970ab7c3bf4d88508aefbbcec161a7205c715e1afbc3ede33348543

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4de2dcdbb7c56dec393c364a135a67fa66a01d618f46390ddfcf8fe9c7d080f1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-01-08T02:45:04Z",
    "title_canon_sha256": "f9595a0b0d1d8a22f05978975590a04fbced447a568aae7308652fc03c3b81a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02138",
    "kind": "arxiv",
    "version": 1
  }
}