Pith Number

pith:KHLVHETY

pith:2015:KHLVHETYA6R5BUZP7YC5LYPUXX

not attested not anchored not stored refs pending

Quasiseparable Hessenberg reduction of real diagonal plus low rank matrices and applications

Dario A. Bini, Leonardo Robol

arxiv:1501.07812 v1 · 2015-01-30 · 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{KHLVHETYA6R5BUZP7YC5LYPUXX}

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	2026-05-18T01:19:38.856832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51d753927807a3d0d32ffe05d5e1f4bdc88e634fb31f8fcbc59521519bd529a3

Aliases

arxiv: 1501.07812 · arxiv_version: 1501.07812v1 · doi: 10.48550/arxiv.1501.07812 · pith_short_12: KHLVHETYA6R5 · pith_short_16: KHLVHETYA6R5BUZP · pith_short_8: KHLVHETY

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/KHLVHETYA6R5BUZP7YC5LYPUXX \
  | 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: 51d753927807a3d0d32ffe05d5e1f4bdc88e634fb31f8fcbc59521519bd529a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ce7e0cb97142f0cf70d117fdef96cd3c7d52b7040d575329f98d6c6579cd442",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-01-30T15:39:43Z",
    "title_canon_sha256": "c052ea9d780b2e83fe741b48d5585731937784fb1c58b13bd3c8e3bb61e099e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07812",
    "kind": "arxiv",
    "version": 1
  }
}