Pith Number

pith:NAS7HULC

pith:2024:NAS7HULCUF2DUWV6QVUBNNHRI7

not attested not anchored not stored refs pending

Fixed-sparsity matrix approximation from matrix-vector products

Cameron Musco, Christopher Musco, Diana Halikias, Feyza Duman Keles, Noah Amsel, Tyler Chen

arxiv:2402.09379 v3 · 2024-02-14 · cs.DS · 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{NAS7HULCUF2DUWV6QVUBNNHRI7}

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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.

Cited by

1 paper in Pith

Sharper Bounds for Chebyshev Moment Matching, with Applications

Receipt and verification

First computed	2026-07-05T08:00:41.058671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6825f3d162a1743a5abe856816b4f147d6e2c81cff8445c74d98246344e0fa8b

Aliases

arxiv: 2402.09379 · arxiv_version: 2402.09379v3 · doi: 10.48550/arxiv.2402.09379 · pith_short_12: NAS7HULCUF2D · pith_short_16: NAS7HULCUF2DUWV6 · pith_short_8: NAS7HULC

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/NAS7HULCUF2DUWV6QVUBNNHRI7 \
  | 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: 6825f3d162a1743a5abe856816b4f147d6e2c81cff8445c74d98246344e0fa8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39e1fdf5c756e30d6567ae4c618a73ad21baed172c773ebe36daa33a173c1845",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2024-02-14T18:25:13Z",
    "title_canon_sha256": "309a400a135e4aa56e81bfbb4f8a4ec2bcce4d3a03755b842a984f2b49a977e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.09379",
    "kind": "arxiv",
    "version": 3
  }
}