Pith Number

pith:WPNVYPPE

pith:2016:WPNVYPPE6NFKNTFDJLL5VBJSJP

not attested not anchored not stored refs pending

HLinear: Exact Dense Linear Algebra in Haskell

Alexandru Ghitza, Martin Raum

arxiv:1605.02532 v3 · 2016-05-09 · cs.MS · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WPNVYPPE6NFKNTFDJLL5VBJSJP}

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	2026-05-18T00:38:13.942430Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3db5c3de4f34aa6cca34ad7da85324beb9780caea98a7d8c39899810c7d5be8

Aliases

arxiv: 1605.02532 · arxiv_version: 1605.02532v3 · doi: 10.48550/arxiv.1605.02532 · pith_short_12: WPNVYPPE6NFK · pith_short_16: WPNVYPPE6NFKNTFD · pith_short_8: WPNVYPPE

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/WPNVYPPE6NFKNTFDJLL5VBJSJP \
  | 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: b3db5c3de4f34aa6cca34ad7da85324beb9780caea98a7d8c39899810c7d5be8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "301b00ccedf52608db2171064418d76f826b7fc1253ada4de7b51e8e28007a11",
    "cross_cats_sorted": [
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2016-05-09T11:24:39Z",
    "title_canon_sha256": "a4c74b42c41d661dc810e2d275c45e480288836f01ac7fe9b143a99f9d831503"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02532",
    "kind": "arxiv",
    "version": 3
  }
}