Pith Number

pith:WZ4TC7P7

pith:2019:WZ4TC7P7TNUE2SBHFGKCVLLP3S

not attested not anchored not stored refs pending

On an inverse source problem for the full radiative transfer equation with incomplete data

Alexey V. Smirnov, Loc H. Nguyen, Michael V. Klibanov

arxiv:1904.00547 v1 · 2019-04-01 · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZ4TC7P7TNUE2SBHFGKCVLLP3S}

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	2026-05-17T23:49:48.133611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b679317dff9b684d482729942aad6fdc87320b20e2253647439d1a90a56f51db

Aliases

arxiv: 1904.00547 · arxiv_version: 1904.00547v1 · doi: 10.48550/arxiv.1904.00547 · pith_short_12: WZ4TC7P7TNUE · pith_short_16: WZ4TC7P7TNUE2SBH · pith_short_8: WZ4TC7P7

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/WZ4TC7P7TNUE2SBHFGKCVLLP3S \
  | 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: b679317dff9b684d482729942aad6fdc87320b20e2253647439d1a90a56f51db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bdd6ad55da3a97775f8a95fbcd46c575d54d8a0c5d772bcde8b523e875512dc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-04-01T03:34:24Z",
    "title_canon_sha256": "44866967f77fe840c84e494c758e5682bc7ede4df316f1d1a356b0ba52617be4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00547",
    "kind": "arxiv",
    "version": 1
  }
}