Pith Number

pith:C57FB375

pith:2010:C57FB375B2YQYTVVLI5P6U3CSE

not attested not anchored not stored refs pending

Linearly scaling direct method for accurately inverting sparse banded matrices

Pablo Echenique, Pablo Garc\'ia-Risue\~no

arxiv:1009.0938 v2 · 2010-09-05 · physics.comp-ph · cs.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{C57FB375B2YQYTVVLI5P6U3CSE}

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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.

Receipt and verification

First computed	2026-05-18T03:20:33.200761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

177e50effd0eb10c4eb55a3aff5362910f019fed8868d2cfce17e5ecd6b9a478

Aliases

arxiv: 1009.0938 · arxiv_version: 1009.0938v2 · doi: 10.48550/arxiv.1009.0938 · pith_short_12: C57FB375B2YQ · pith_short_16: C57FB375B2YQYTVV · pith_short_8: C57FB375

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/C57FB375B2YQYTVVLI5P6U3CSE \
  | 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: 177e50effd0eb10c4eb55a3aff5362910f019fed8868d2cfce17e5ecd6b9a478

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27199ce419e1f7ccee8d1fff80910e26ca314b7d5220ebc2c893308da36abedf",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2010-09-05T18:05:22Z",
    "title_canon_sha256": "1880f0f61474730e33eb9e9b739daa8ddb9fb18955ee3260ec8ecd749efaba90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.0938",
    "kind": "arxiv",
    "version": 2
  }
}