Pith Number

pith:GKRDW7YO

pith:2017:GKRDW7YOKE7FUPB3POXV55LO57

not attested not anchored not stored refs pending

A Householder-based algorithm for Hessenberg-triangular reduction

Daniel Kressner, Lars Karlsson, Zvonimir Bujanovi\'c

arxiv:1710.08538 v2 · 2017-10-23 · 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{GKRDW7YOKE7FUPB3POXV55LO57}

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	2026-05-18T00:14:40.860167Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

32a23b7f0e513e5a3c3b7baf5ef56eefea53ee16982008893e1fac042365e4d9

Aliases

arxiv: 1710.08538 · arxiv_version: 1710.08538v2 · doi: 10.48550/arxiv.1710.08538 · pith_short_12: GKRDW7YOKE7F · pith_short_16: GKRDW7YOKE7FUPB3 · pith_short_8: GKRDW7YO

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/GKRDW7YOKE7FUPB3POXV55LO57 \
  | 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: 32a23b7f0e513e5a3c3b7baf5ef56eefea53ee16982008893e1fac042365e4d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "843ce696a96b172372e186061103d947d4fb91d32627a2d0b8e549a9720ffcfb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-10-23T22:46:57Z",
    "title_canon_sha256": "a0c0f09cdb11701d329d14de822c10610514d9afb67b3786c199781b3bdea073"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.08538",
    "kind": "arxiv",
    "version": 2
  }
}