Pith Number

pith:LJWCKSQ3

pith:2011:LJWCKSQ3V4XDFHJB4VVSYNG6SF

not attested not anchored not stored refs pending

Preconditioning linear systems via matrix function evaluation

Maria Rosaria Russo, Michela Redivo-Zaglia, Paolo Novati

arxiv:1105.6367 v2 · 2011-05-31 · 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{LJWCKSQ3V4XDFHJB4VVSYNG6SF}

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	2026-05-18T04:08:12.419820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a6c254a1baf2e329d21e56b2c34de9174d4cebfe37552334859e4ca165f39f8

Aliases

arxiv: 1105.6367 · arxiv_version: 1105.6367v2 · doi: 10.48550/arxiv.1105.6367 · pith_short_12: LJWCKSQ3V4XD · pith_short_16: LJWCKSQ3V4XDFHJB · pith_short_8: LJWCKSQ3

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/LJWCKSQ3V4XDFHJB4VVSYNG6SF \
  | 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: 5a6c254a1baf2e329d21e56b2c34de9174d4cebfe37552334859e4ca165f39f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2665610735c1a71188143e2e6ef12521eaa42ad1244d3ed2c6002247c99858c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2011-05-31T19:18:46Z",
    "title_canon_sha256": "bd0e4ed74d9f507a709d0597842c76f2933c22661e8262da2feb365082013b4e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.6367",
    "kind": "arxiv",
    "version": 2
  }
}