Pith Number

pith:XR7ET3M2

pith:2018:XR7ET3M2KUSTBGJTNITLQ4O7A7

not attested not anchored not stored refs pending

Preconditioners for symmetrized Toeplitz and multilevel Toeplitz matrices

Jennifer Pestana

arxiv:1812.02479 v3 · 2018-12-06 · 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{XR7ET3M2KUSTBGJTNITLQ4O7A7}

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	2026-05-17T23:48:45.347241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7e49ed9a55253099336a26b871df07ff2c4c8a3f5bab685c07b25a76a9fa38

Aliases

arxiv: 1812.02479 · arxiv_version: 1812.02479v3 · doi: 10.48550/arxiv.1812.02479 · pith_short_12: XR7ET3M2KUST · pith_short_16: XR7ET3M2KUSTBGJT · pith_short_8: XR7ET3M2

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/XR7ET3M2KUSTBGJTNITLQ4O7A7 \
  | 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: bc7e49ed9a55253099336a26b871df07ff2c4c8a3f5bab685c07b25a76a9fa38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edba70709d9389963a28a548d034e98e397712ff1754b52893cd16ed9aafa292",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-12-06T11:47:29Z",
    "title_canon_sha256": "6c26bd6ce077d525fb0f74077a18226c556fd69a8074b58f9105b676e2e228ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.02479",
    "kind": "arxiv",
    "version": 3
  }
}