Pith Number

pith:4ZDV7MRA

pith:2019:4ZDV7MRAZRYTHSXLW5X4PB7CIJ

not attested not anchored not stored refs pending

An energy consistent discretization of the nonhydrostatic equations in primitive variables

Andrew Steyer, Christopher Eldred, David Hall, Mark A. Taylor, Oksana Guba, Paul Ullrich

arxiv:1908.04430 v1 · 2019-08-12 · 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{4ZDV7MRAZRYTHSXLW5X4PB7CIJ}

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	2026-07-05T00:56:29.708201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6475fb220cc7133caebb76fc787e2427512686a612fa0275c8abb90e5dd9e34

Aliases

arxiv: 1908.04430 · arxiv_version: 1908.04430v1 · doi: 10.48550/arxiv.1908.04430 · pith_short_12: 4ZDV7MRAZRYT · pith_short_16: 4ZDV7MRAZRYTHSXL · pith_short_8: 4ZDV7MRA

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/4ZDV7MRAZRYTHSXLW5X4PB7CIJ \
  | 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: e6475fb220cc7133caebb76fc787e2427512686a612fa0275c8abb90e5dd9e34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01d425d08ad1bfbb8d64dbbbfbc226f1930e9482887d02896344e0bb0334dc0e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-12T22:39:48Z",
    "title_canon_sha256": "1a48357c48578320bd8013524d9398bb867a64216f3558d5b98a0eeed152a3f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04430",
    "kind": "arxiv",
    "version": 1
  }
}