Pith Number

pith:PQ5YUVDD

pith:2026:PQ5YUVDD57GIKV7JWMN66SDJ5K

not attested not anchored not stored refs pending

Evaluating Rust for Sparse Matrix Kernels in Scientific Computing

Fabio Durastante, Luca Lombardo

arxiv:2606.19213 v1 · 2026-06-17 · cs.MS · cs.NA · 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{PQ5YUVDD57GIKV7JWMN66SDJ5K}

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	2026-06-19T16:12:07.936411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c3b8a5463efcc8557e9b31bef4869ea9942cb76a47cf03610d71cf291065f7e

Aliases

arxiv: 2606.19213 · arxiv_version: 2606.19213v1 · doi: 10.48550/arxiv.2606.19213 · pith_short_12: PQ5YUVDD57GI · pith_short_16: PQ5YUVDD57GIKV7J · pith_short_8: PQ5YUVDD

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/PQ5YUVDD57GIKV7JWMN66SDJ5K \
  | 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: 7c3b8a5463efcc8557e9b31bef4869ea9942cb76a47cf03610d71cf291065f7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b898d0e7d6e9a159ac98fadcf830b3c5aaa52718f8601d5cee6077f509ed0e10",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2026-06-17T15:49:34Z",
    "title_canon_sha256": "98e2ce562d3e2dbe1b163b7a3a457abf59181149413fd4c20851fccce210421d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.19213",
    "kind": "arxiv",
    "version": 1
  }
}