Pith Number

pith:LOH53KSE

pith:2024:LOH53KSEH5WW2N2VZSPP6BNBRP

not attested not anchored not stored refs pending

Derivatives of the full QR factorisation and of the factored-form and compact WY representations

Stefanos-Aldo Papanicolopulos

arxiv:2409.13374 v2 · 2024-09-20 · math.NA · 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{LOH53KSEH5WW2N2VZSPP6BNBRP}

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	2026-07-05T11:09:43.357125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5b8fddaa443f6d6d3755cc9eff05a18bded12d96a885abb664a4afa0c95ee211

Aliases

arxiv: 2409.13374 · arxiv_version: 2409.13374v2 · doi: 10.48550/arxiv.2409.13374 · pith_short_12: LOH53KSEH5WW · pith_short_16: LOH53KSEH5WW2N2V · pith_short_8: LOH53KSE

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/LOH53KSEH5WW2N2VZSPP6BNBRP \
  | 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: 5b8fddaa443f6d6d3755cc9eff05a18bded12d96a885abb664a4afa0c95ee211

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64cd423f4d7c8650e9d289137cc15b0b9cdb0260a9ee5fe65f9f5def41c4dbd7",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-09-20T10:22:32Z",
    "title_canon_sha256": "1a470159b624351634efffe3c08d8c9e9eec6cd3848556cfce99665336be312c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2409.13374",
    "kind": "arxiv",
    "version": 2
  }
}