Pith Number

pith:FDTDWJPO

pith:2014:FDTDWJPOVWBYU3FEFJMNWQ7ADP

not attested not anchored not stored refs pending

Compressed absorbing boundary conditions via matrix probing

Laurent Demanet, Rosalie B\'elanger-Rioux

arxiv:1401.4421 v1 · 2014-01-17 · 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{FDTDWJPOVWBYU3FEFJMNWQ7ADP}

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	2026-05-18T03:01:55.050745Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28e63b25eead838a6ca42a58db43e01bd701cb3fa9aae11cfe8039050faedefc

Aliases

arxiv: 1401.4421 · arxiv_version: 1401.4421v1 · doi: 10.48550/arxiv.1401.4421 · pith_short_12: FDTDWJPOVWBY · pith_short_16: FDTDWJPOVWBYU3FE · pith_short_8: FDTDWJPO

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/FDTDWJPOVWBYU3FEFJMNWQ7ADP \
  | 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: 28e63b25eead838a6ca42a58db43e01bd701cb3fa9aae11cfe8039050faedefc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebc6af82d5deb7156d19173b943c20b3a58fc649129247457b95f052b22f9c69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-01-17T18:11:31Z",
    "title_canon_sha256": "29b25f286bcf98849c82fef704924eb0d43c5e47e3682b9c2e6e16b3e99d913a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.4421",
    "kind": "arxiv",
    "version": 1
  }
}