Pith Number

pith:PMJQDPHC

pith:2018:PMJQDPHCXQDNQHK5NJSI6MNDS2

not attested not anchored not stored refs pending

Matrix-free construction of HSS representation using adaptive randomized sampling

Christopher Gorman, Fran\c{c}ois-Henry Rouet, Gustavo Ch\'avez, Pieter Ghysels, Th\'eo Mary, Xiaoye Sherry Li

arxiv:1810.04125 v2 · 2018-10-09 · cs.NA · cs.MS

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PMJQDPHCXQDNQHK5NJSI6MNDS2}

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	2026-05-18T00:03:31.495888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b1301bce2bc06d81d5d6a648f31a39687f6c0cbe273708de94870253c11cbe9

Aliases

arxiv: 1810.04125 · arxiv_version: 1810.04125v2 · doi: 10.48550/arxiv.1810.04125 · pith_short_12: PMJQDPHCXQDN · pith_short_16: PMJQDPHCXQDNQHK5 · pith_short_8: PMJQDPHC

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/PMJQDPHCXQDNQHK5NJSI6MNDS2 \
  | 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: 7b1301bce2bc06d81d5d6a648f31a39687f6c0cbe273708de94870253c11cbe9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "259e8a6108fe1d294f1b6a6baad6a2043fa630aa15179b3a7087264469e2cffd",
    "cross_cats_sorted": [
      "cs.MS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-10-09T16:50:10Z",
    "title_canon_sha256": "38e53cf40d3bf90bc43fbfe8d37f3b0589e6c98a38ce2d809dfd77cd081fcc1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04125",
    "kind": "arxiv",
    "version": 2
  }
}