Pith Number

pith:MRNZW7F5

pith:2018:MRNZW7F5635BWJQ3MYPYOUBEBC

not attested not anchored not stored refs pending

SBP-SAT finite difference discretization of acoustic wave equations on staggered block-wise uniform grids

David C. Del Rey Fernandez, David Keyes, Longfei Gao, Mark Carpenter

arxiv:1802.06123 v1 · 2018-02-16 · 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{MRNZW7F5635BWJQ3MYPYOUBEBC}

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	2026-05-18T00:23:04.393637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

645b9b7cbdf6fa1b261b661f875024089063d33d83ae4bc8e7563d5c6a3ed122

Aliases

arxiv: 1802.06123 · arxiv_version: 1802.06123v1 · doi: 10.48550/arxiv.1802.06123 · pith_short_12: MRNZW7F5635B · pith_short_16: MRNZW7F5635BWJQ3 · pith_short_8: MRNZW7F5

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/MRNZW7F5635BWJQ3MYPYOUBEBC \
  | 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: 645b9b7cbdf6fa1b261b661f875024089063d33d83ae4bc8e7563d5c6a3ed122

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a68b13c21ac8e26414cdfc9196a2344251b86ee287ee2557dde5712c04248f90",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-02-16T21:11:56Z",
    "title_canon_sha256": "40f7f795b79e56566b1b7b80ab9d1ff7a4eca6ad17022c57d033d1424be8ecab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06123",
    "kind": "arxiv",
    "version": 1
  }
}