Pith Number

pith:F4U6X3E4

pith:2019:F4U6X3E4JFHNMKDYKJLGDTS67L

not attested not anchored not stored refs pending

Inverse problems for elliptic equations with power type nonlinearities

Matti Lassas, Mikko Salo, Tony Liimatainen, Yi-Hsuan Lin

arxiv:1903.12562 v1 · 2019-03-29 · math.AP · 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{F4U6X3E4JFHNMKDYKJLGDTS67L}

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	2026-05-17T23:49:53.701352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f29ebec9c494ed62878525661ce5efac5cdcfaecd1e2abf0663c074a7dcdd74

Aliases

arxiv: 1903.12562 · arxiv_version: 1903.12562v1 · doi: 10.48550/arxiv.1903.12562 · pith_short_12: F4U6X3E4JFHN · pith_short_16: F4U6X3E4JFHNMKDY · pith_short_8: F4U6X3E4

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/F4U6X3E4JFHNMKDYKJLGDTS67L \
  | 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: 2f29ebec9c494ed62878525661ce5efac5cdcfaecd1e2abf0663c074a7dcdd74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7816f92bfbd2b1a8f189a8946cd82dc6148ca1d547df0a3e6e612525548ec811",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-03-29T15:12:40Z",
    "title_canon_sha256": "53ec0b38bc04094486c1eef75159e903c76d2e2bb74f230e0e6c850361404374"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.12562",
    "kind": "arxiv",
    "version": 1
  }
}