Pith Number

pith:XZ3VSRS5

pith:2019:XZ3VSRS5QP56QF5WHTF6SKSZZY

not attested not anchored not stored refs pending

An Efficient and high accuracy finite-difference scheme for the acoustic wave equation in 3D heterogeneous media

Keran Li, Wenyuan Liao

arxiv:1905.03831 v1 · 2019-05-09 · cs.NA · cs.CE · math.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{XZ3VSRS5QP56QF5WHTF6SKSZZY}

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	2026-05-17T23:46:35.499561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be7759465d83fbe817b63ccbe92a59ce358f3171625f74f6a923a5b6f51d93c2

Aliases

arxiv: 1905.03831 · arxiv_version: 1905.03831v1 · doi: 10.48550/arxiv.1905.03831 · pith_short_12: XZ3VSRS5QP56 · pith_short_16: XZ3VSRS5QP56QF5W · pith_short_8: XZ3VSRS5

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/XZ3VSRS5QP56QF5WHTF6SKSZZY \
  | 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: be7759465d83fbe817b63ccbe92a59ce358f3171625f74f6a923a5b6f51d93c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c0be2a670c20a33b58e7cc30894e1448ff27f081f51c6ece3ae1ff878f59d24",
    "cross_cats_sorted": [
      "cs.CE",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2019-05-09T19:45:03Z",
    "title_canon_sha256": "aee3ddc546642e88cd94baa62ef2cbf7f37462a647e2cb210bc84feece2dc304"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.03831",
    "kind": "arxiv",
    "version": 1
  }
}