Pith Number

pith:XC4UZRNV

pith:2018:XC4UZRNVQGEFUNKICT2CON7QZA

not attested not anchored not stored refs pending

Polynomial Preconditioned Arnoldi

Jennifer A. Loe, Mark Embree, Ronald B. Morgan

arxiv:1806.08020 v1 · 2018-06-21 · math.NA · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XC4UZRNVQGEFUNKICT2CON7QZA}

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	2026-05-18T00:12:42.283311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8b94cc5b581885a354814f42737f0c818b79807658a957bdb1d0663800f5902

Aliases

arxiv: 1806.08020 · arxiv_version: 1806.08020v1 · doi: 10.48550/arxiv.1806.08020 · pith_short_12: XC4UZRNVQGEF · pith_short_16: XC4UZRNVQGEFUNKI · pith_short_8: XC4UZRNV

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/XC4UZRNVQGEFUNKICT2CON7QZA \
  | 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: b8b94cc5b581885a354814f42737f0c818b79807658a957bdb1d0663800f5902

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3c8993c779ef9a56daa88c41ba57ffa9a755ca8a557eb6b127798ec65fc82d6",
    "cross_cats_sorted": [
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-21T00:14:21Z",
    "title_canon_sha256": "2b632f157b8670ed85686998c20cf4b20aefe101dffadeb20f1d7670a825da00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.08020",
    "kind": "arxiv",
    "version": 1
  }
}