Pith Number

pith:63H574GF

pith:2026:63H574GFA6XGDI73DFBNHW7BRV

not attested not anchored not stored refs pending

Robustifying Sparse Matrix Multiplication

Karl Bringmann, Nick Fischer, Vasileios Nakos

arxiv:2607.01427 v1 · 2026-07-01 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63H574GFA6XGDI73DFBNHW7BRV}

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	2026-07-03T00:16:59.994795Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6cfdff0c507ae61a3fb1942d3dbe18d60c98a26704dccacaf515495700a4127

Aliases

arxiv: 2607.01427 · arxiv_version: 2607.01427v1 · doi: 10.48550/arxiv.2607.01427 · pith_short_12: 63H574GFA6XG · pith_short_16: 63H574GFA6XGDI73 · pith_short_8: 63H574GF

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/63H574GFA6XGDI73DFBNHW7BRV \
  | 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: f6cfdff0c507ae61a3fb1942d3dbe18d60c98a26704dccacaf515495700a4127

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d2d89ffb9ede783f599600ed730738074799eaa1c5c3a3231f02bf8fc6e906a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2026-07-01T19:44:56Z",
    "title_canon_sha256": "01ed793cd8d6b1fb4d8e8af5d4a4d43f473778e1b68efd13ff8f431e9daf2666"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.01427",
    "kind": "arxiv",
    "version": 1
  }
}