Pith Number

pith:P243GYJT

pith:2018:P243GYJTLZ7OTNTNMKFRPNLPWN

not attested not anchored not stored refs pending

Symmetric indefinite triangular factorization revealing the rank profile matrix

Clement Pernet (CASYS), Jean-Guillaume Dumas (CASYS)

arxiv:1802.10453 v1 · 2018-02-26 · 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{P243GYJTLZ7OTNTNMKFRPNLPWN}

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	2026-05-18T00:22:17.109501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7eb9b361335e7ee9b66d628b17b56fb36af260666b4a4f98aa9446d117bc6ebe

Aliases

arxiv: 1802.10453 · arxiv_version: 1802.10453v1 · doi: 10.48550/arxiv.1802.10453 · pith_short_12: P243GYJTLZ7O · pith_short_16: P243GYJTLZ7OTNTN · pith_short_8: P243GYJT

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/P243GYJTLZ7OTNTNMKFRPNLPWN \
  | 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: 7eb9b361335e7ee9b66d628b17b56fb36af260666b4a4f98aa9446d117bc6ebe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cff69c5679b9f43d62b814cc863a16993690294d2cac1bf708f017d2599a520",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-02-26T15:37:00Z",
    "title_canon_sha256": "28c2baa86f6e4404da97c365bd9786795375c1791f690c55a22a0226dfc46372"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.10453",
    "kind": "arxiv",
    "version": 1
  }
}