Pith Number

pith:DPBIJLBL

pith:2019:DPBIJLBLJUQKU7N3V2LFYYZ7TG

not attested not anchored not stored refs pending

On the Non-Linear Integral Equation Approach for an Inverse Boundary Value Problem for the Heat Equation

Leonidas Mindrinos, Roman Chapko

arxiv:1903.07412 v2 · 2019-03-18 · math.NA · cs.NA · 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{DPBIJLBLJUQKU7N3V2LFYYZ7TG}

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	2026-06-04T20:14:14.986626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bc284ac2b4d20aa7dbbae965c633f99b2dfcdce08a4dc8319199c2a2d364ff3

Aliases

arxiv: 1903.07412 · arxiv_version: 1903.07412v2 · doi: 10.48550/arxiv.1903.07412 · pith_short_12: DPBIJLBLJUQK · pith_short_16: DPBIJLBLJUQKU7N3 · pith_short_8: DPBIJLBL

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/DPBIJLBLJUQKU7N3V2LFYYZ7TG \
  | 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: 1bc284ac2b4d20aa7dbbae965c633f99b2dfcdce08a4dc8319199c2a2d364ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc4a8606cf3b8df9686472f8938b48388c8dd93408cf9c6a6e44aa73614f9100",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-18T13:07:02Z",
    "title_canon_sha256": "101db1e78b109c2ff3de6ac4cc0f246f45996532b928e4e3d7f98dafb59c9422"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07412",
    "kind": "arxiv",
    "version": 2
  }
}