Pith Number

pith:OKJPG46O

pith:2019:OKJPG46OD72ML5DOUNJYWI7KJL

not attested not anchored not stored refs pending

A Time-Split MacCormack Scheme for Two-Dimensional Nonlinear Reaction-Diffusion Equations

Eric Ngondiep

arxiv:1903.10877 v1 · 2019-03-22 · 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{OKJPG46OD72ML5DOUNJYWI7KJL}

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	2026-06-04T20:14:17.844221Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7292f373ce1ff4c5f46ea3538b23ea4acf4d25e58090ce9f38a3fbed98b08954

Aliases

arxiv: 1903.10877 · arxiv_version: 1903.10877v1 · doi: 10.48550/arxiv.1903.10877 · pith_short_12: OKJPG46OD72M · pith_short_16: OKJPG46OD72ML5DO · pith_short_8: OKJPG46O

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/OKJPG46OD72ML5DOUNJYWI7KJL \
  | 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: 7292f373ce1ff4c5f46ea3538b23ea4acf4d25e58090ce9f38a3fbed98b08954

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3699a739de39458018aed8589b3c265ec8ec35a78bea89785c19946d766cb13d",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-22T06:32:12Z",
    "title_canon_sha256": "e14999056c744f48c1185cc506a5ac759ce97b772225bfecbfd703db486efdbb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.10877",
    "kind": "arxiv",
    "version": 1
  }
}