Pith Number

pith:4JWWBJFV

pith:2018:4JWWBJFVZLH5CP5VVZ5JKXQG6V

not attested not anchored not stored refs pending

GCA-$\mathcal{H}^2$ matrix compression for electrostatic simulations

Steffen B\"orm, Sven Christophersen

arxiv:1810.08429 v1 · 2018-10-19 · 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{4JWWBJFVZLH5CP5VVZ5JKXQG6V}

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	2026-05-18T00:02:48.109298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e26d60a4b5cacfd13fb5ae7a955e06f549bf96a592cd425d190f5e389758bc00

Aliases

arxiv: 1810.08429 · arxiv_version: 1810.08429v1 · doi: 10.48550/arxiv.1810.08429 · pith_short_12: 4JWWBJFVZLH5 · pith_short_16: 4JWWBJFVZLH5CP5V · pith_short_8: 4JWWBJFV

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/4JWWBJFVZLH5CP5VVZ5JKXQG6V \
  | 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: e26d60a4b5cacfd13fb5ae7a955e06f549bf96a592cd425d190f5e389758bc00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eac0e8a32c94b35aa774609080b8227503ff07e92019bb87bd5f6ea4fda48262",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-10-19T10:12:50Z",
    "title_canon_sha256": "339bbf75123c66a50cb2df64b6450f79f8464ecda8f15adf7a891f467503c2b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.08429",
    "kind": "arxiv",
    "version": 1
  }
}