Pith Number

pith:YWWBIY2F

pith:2018:YWWBIY2F276XUI3I5UKGJHNHS5

not attested not anchored not stored refs pending

An $L^\infty$ regularisation strategy to the inverse source identification problem for elliptic equations

Nikos Katzourakis (Reading, UK)

arxiv:1811.02845 v3 · 2018-11-07 · 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{YWWBIY2F276XUI3I5UKGJHNHS5}

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	2026-05-17T23:56:12.570396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5ac146345d7fd7a2368ed14649da79771b74cc44d52943b0efb36913e843f64

Aliases

arxiv: 1811.02845 · arxiv_version: 1811.02845v3 · doi: 10.48550/arxiv.1811.02845 · pith_short_12: YWWBIY2F276X · pith_short_16: YWWBIY2F276XUI3I · pith_short_8: YWWBIY2F

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/YWWBIY2F276XUI3I5UKGJHNHS5 \
  | 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: c5ac146345d7fd7a2368ed14649da79771b74cc44d52943b0efb36913e843f64

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dba10f7df2f04f983f03b8ddcdc2253e1d0330e3b114a298d88716f0110d92d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-11-07T11:43:13Z",
    "title_canon_sha256": "b3ba440f3c1b295b0920ebe3a85306e9ac1b6ed2a087e60690e3e36b1bcb7924"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.02845",
    "kind": "arxiv",
    "version": 3
  }
}