Pith Number

pith:B6L2WRTO

pith:2018:B6L2WRTO6K5TZL3UAH7XH2RGG5

not attested not anchored not stored refs pending

A study of Schr\"oder's method for the matrix $p$th root using power series expansions

Chun-Hua Guo, Di Lu

arxiv:1807.04251 v1 · 2018-07-11 · 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{B6L2WRTO6K5TZL3UAH7XH2RGG5}

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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	2026-05-18T00:10:57.532428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f97ab466ef2bb3caf7401ff73ea2637602d81b214b6ea59700ae0427196cf35

Aliases

arxiv: 1807.04251 · arxiv_version: 1807.04251v1 · doi: 10.48550/arxiv.1807.04251 · pith_short_12: B6L2WRTO6K5T · pith_short_16: B6L2WRTO6K5TZL3U · pith_short_8: B6L2WRTO

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/B6L2WRTO6K5TZL3UAH7XH2RGG5 \
  | 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: 0f97ab466ef2bb3caf7401ff73ea2637602d81b214b6ea59700ae0427196cf35

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9b45c807ab26648a95496e11f10912181e6447cf6ace0328cd8f51e38b5feb25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-11T17:14:46Z",
    "title_canon_sha256": "0083a91fa0c8182c06bc60fa5109ae977f9d023be4fffd250f0930e9fe985c4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04251",
    "kind": "arxiv",
    "version": 1
  }
}