Pith Number

pith:4IIIP537

pith:2019:4IIIP5372YSKADNS5LXP4ITG2L

not attested not anchored not stored refs pending

On the identification of a nonlinear term in a reaction-diffusion equation

Barbara Kaltenbacher, William Rundell

arxiv:1905.12067 v1 · 2019-05-28 · math.NA · cs.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{4IIIP5372YSKADNS5LXP4ITG2L}

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	2026-06-04T20:14:33.651530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e21087f77fd624a00db2eaeefe2266d2e309b1104e8163ce0ca3d55dd1f856c2

Aliases

arxiv: 1905.12067 · arxiv_version: 1905.12067v1 · doi: 10.48550/arxiv.1905.12067 · pith_short_12: 4IIIP5372YSK · pith_short_16: 4IIIP5372YSKADNS · pith_short_8: 4IIIP537

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/4IIIP5372YSKADNS5LXP4ITG2L \
  | 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: e21087f77fd624a00db2eaeefe2266d2e309b1104e8163ce0ca3d55dd1f856c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cb21c3e12f5febe3f41fdfd698814535d70caf8ba9b77f95c124f11f28dab16",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-28T20:19:46Z",
    "title_canon_sha256": "5178a6650747e9d4a532448e0bbb330df4194d460c5184afcd3e93ff4fb5157d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.12067",
    "kind": "arxiv",
    "version": 1
  }
}