Pith Number

pith:LLBV5CAQ

pith:2017:LLBV5CAQSROZN4C4ZDCQLBLETK

not attested not anchored not stored refs pending

Convergence of finite difference methods for the wave equation in two space dimensions

Anna Nissen, Gunilla Kreiss, Siyang Wang

arxiv:1702.01383 v2 · 2017-02-05 · 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{LLBV5CAQSROZN4C4ZDCQLBLETK}

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	2026-05-18T00:07:33.237173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ac35e8810945d96f05cc8c50585649ab056dd73ed88097194e490f8b01495e1

Aliases

arxiv: 1702.01383 · arxiv_version: 1702.01383v2 · doi: 10.48550/arxiv.1702.01383 · pith_short_12: LLBV5CAQSROZ · pith_short_16: LLBV5CAQSROZN4C4 · pith_short_8: LLBV5CAQ

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/LLBV5CAQSROZN4C4ZDCQLBLETK \
  | 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: 5ac35e8810945d96f05cc8c50585649ab056dd73ed88097194e490f8b01495e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7287ab2cd5731f83fa772cd73d2cc7111f7bbba2692baaeb70aa46ce520a6fd8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-02-05T09:08:21Z",
    "title_canon_sha256": "87d0fa071819b3949effec9b63a19ac51419e1473177214fbd6e5889aab98a16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.01383",
    "kind": "arxiv",
    "version": 2
  }
}