Pith Number

pith:QK5ETVPW

pith:2025:QK5ETVPWP6K2EH5632VB3SW7NZ

not attested not anchored not stored refs pending

Anatomy of High-Performance Column-Pivoted QR Decomposition

James Demmel, Maksim Melnichenko, Mark Gates, Michael W. Mahoney, Piotr Luszczek, Riley Murray, William Killian

arxiv:2507.00976 v1 · 2025-07-01 · cs.MS · cs.NA · 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{QK5ETVPWP6K2EH5632VB3SW7NZ}

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.

Cited by

2 papers in Pith

Orthogonal reparametrization of the Nelson-Siegel-Svensson interest rate curve model: conditioning, diagnostics, and identifiability

Receipt and verification

First computed	2026-07-05T11:30:19.024584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82ba49d5f67f95a21fbedeaa1dcadf6e75bee3c09f4400416b746c7dd1448a19

Aliases

arxiv: 2507.00976 · arxiv_version: 2507.00976v1 · doi: 10.48550/arxiv.2507.00976 · pith_short_12: QK5ETVPWP6K2 · pith_short_16: QK5ETVPWP6K2EH56 · pith_short_8: QK5ETVPW

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/QK5ETVPWP6K2EH5632VB3SW7NZ \
  | 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: 82ba49d5f67f95a21fbedeaa1dcadf6e75bee3c09f4400416b746c7dd1448a19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5aaa448789d9ca9d883907d972f409dbf731e7562d256dd4b05f4b366d37d080",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2025-07-01T17:25:36Z",
    "title_canon_sha256": "936d995cb0c8e302bb62669018597ed52a0918dc6e3bac6d3b082173bd0d42c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.00976",
    "kind": "arxiv",
    "version": 1
  }
}