Pith Number

pith:XNOAREGD

pith:2026:XNOAREGD5Y3VNIO7O2FU2GBXVF

not attested not anchored not stored refs pending

Riemann invariant-based alternative WENO scheme for a two-layer thin film model

Biswarup Biswas, Rahul Barthwal, Rakesh Kumar

arxiv:2606.17862 v2 · 2026-06-16 · 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{XNOAREGD5Y3VNIO7O2FU2GBXVF}

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	2026-06-19T16:11:38.730482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb5c0890c3ee3756a1df768b4d1837a9724363c0c71ab0427333ecb49d469abf

Aliases

arxiv: 2606.17862 · arxiv_version: 2606.17862v2 · doi: 10.48550/arxiv.2606.17862 · pith_short_12: XNOAREGD5Y3V · pith_short_16: XNOAREGD5Y3VNIO7 · pith_short_8: XNOAREGD

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/XNOAREGD5Y3VNIO7O2FU2GBXVF \
  | 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: bb5c0890c3ee3756a1df768b4d1837a9724363c0c71ab0427333ecb49d469abf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5227a2d6755e53d3cc31d97c2c6cde477bbd1a36aaee97d35f859d755ad7b391",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-16T12:35:01Z",
    "title_canon_sha256": "ca09fe690669dfc61684b0ee51ff61a7011569aab3f45aa1f9613b7f8895d7b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.17862",
    "kind": "arxiv",
    "version": 2
  }
}