Pith Number

pith:DX2TXT4E

pith:2019:DX2TXT4E6NL74WXV6BJ4HXPGKO

not attested not anchored not stored refs pending

Partial data inverse problems and simultaneous recovery of boundary and coefficients for semilinear elliptic equations

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

arxiv:1905.02764 v1 · 2019-05-07 · 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{DX2TXT4E6NL74WXV6BJ4HXPGKO}

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	2026-05-17T23:46:45.437138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1df53bcf84f357fe5af5f053c3dde65390fbb853657ceaa5a454d893274d025d

Aliases

arxiv: 1905.02764 · arxiv_version: 1905.02764v1 · doi: 10.48550/arxiv.1905.02764 · pith_short_12: DX2TXT4E6NL7 · pith_short_16: DX2TXT4E6NL74WXV · pith_short_8: DX2TXT4E

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/DX2TXT4E6NL74WXV6BJ4HXPGKO \
  | 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: 1df53bcf84f357fe5af5f053c3dde65390fbb853657ceaa5a454d893274d025d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be3282be5463f0a3a42642142fb5960dc6d7b572a98a374975ffe59567dffee0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-05-07T18:45:49Z",
    "title_canon_sha256": "43df4bd58be9ea85fc85c2b9d390d0cdf9bfee032b7df2c0e8380f6492df8f94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.02764",
    "kind": "arxiv",
    "version": 1
  }
}