Pith Number

pith:CDUNHV2Z

pith:2019:CDUNHV2ZMY7ZAAB754I27R3XNK

not attested not anchored not stored refs pending

A compact high order Alternating Direction Implicit method for three-dimensional acoustic wave equation with variable coefficient

Keran Li, Wenyuan Liao, Yaoting Lin

arxiv:1903.08108 v2 · 2019-03-19 · 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{CDUNHV2ZMY7ZAAB754I27R3XNK}

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	2026-05-17T23:50:44.353760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10e8d3d759663f90003fef11afc7776a91de26e8514a8e230f3b31cfb2fb6ed7

Aliases

arxiv: 1903.08108 · arxiv_version: 1903.08108v2 · doi: 10.48550/arxiv.1903.08108 · pith_short_12: CDUNHV2ZMY7Z · pith_short_16: CDUNHV2ZMY7ZAAB7 · pith_short_8: CDUNHV2Z

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/CDUNHV2ZMY7ZAAB754I27R3XNK \
  | 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: 10e8d3d759663f90003fef11afc7776a91de26e8514a8e230f3b31cfb2fb6ed7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4d56e49438a8cb225fef9aa96f77a38cd7917f071c27f4e9a58c2a51e91a433",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2019-03-19T16:54:17Z",
    "title_canon_sha256": "bee4dab22224618fa9431aee32ec22dc30df61dbb071d425b4fac0f84aa311aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08108",
    "kind": "arxiv",
    "version": 2
  }
}