Pith Number

pith:2E5LDMPW

pith:2026:2E5LDMPW2Y2VUTLUBQI2TUL6J5

not attested not anchored not stored refs pending

Efficient and simple fourth-order compact finite difference methods for convection-diffusion-reaction equations on arbitrary curved domains

Bin Han, Peter Minev, Qiwei Feng

arxiv:2605.20842 v1 · 2026-05-20 · 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{2E5LDMPW2Y2VUTLUBQI2TUL6J5}

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	2026-05-21T01:05:24.163788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d13ab1b1f6d6355a4d740c11a9d17e4f5ee655dd966054a7b47dd2b9cf022801

Aliases

arxiv: 2605.20842 · arxiv_version: 2605.20842v1 · doi: 10.48550/arxiv.2605.20842 · pith_short_12: 2E5LDMPW2Y2V · pith_short_16: 2E5LDMPW2Y2VUTLU · pith_short_8: 2E5LDMPW

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/2E5LDMPW2Y2VUTLUBQI2TUL6J5 \
  | 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: d13ab1b1f6d6355a4d740c11a9d17e4f5ee655dd966054a7b47dd2b9cf022801

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a580f632f1bc53361de44de97044893854192b1a3bfeb9c7f80c19b863b499e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-20T07:30:24Z",
    "title_canon_sha256": "e85b879c102bed982b5852aafbf41fb4bc1ea240b7ab0a5417532c385774c832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20842",
    "kind": "arxiv",
    "version": 1
  }
}