Pith Number

pith:CENSPI6R

pith:2012:CENSPI6RAXP3XUU7JTYM6GXABD

not attested not anchored not stored refs pending

An improved dqds algorithm

Beresford N. Parlett, Ming Gu, Shengguo Li

arxiv:1209.5462 v2 · 2012-09-25 · 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{CENSPI6RAXP3XUU7JTYM6GXABD}

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	2026-05-18T02:57:33.917350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

111b27a3d105dfbbd29f4cf0cf1ae008c9e98f549ab44b0866d060a0c3059dbc

Aliases

arxiv: 1209.5462 · arxiv_version: 1209.5462v2 · doi: 10.48550/arxiv.1209.5462 · pith_short_12: CENSPI6RAXP3 · pith_short_16: CENSPI6RAXP3XUU7 · pith_short_8: CENSPI6R

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/CENSPI6RAXP3XUU7JTYM6GXABD \
  | 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: 111b27a3d105dfbbd29f4cf0cf1ae008c9e98f549ab44b0866d060a0c3059dbc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d81743330c61fd91d66eb17d486fe74de324e2a71ac12c4d534e3f078132811f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-09-25T00:31:17Z",
    "title_canon_sha256": "e9c67672c75acafae643a6624c705b7124ab56e1c0b756bf71ed80725b95f054"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.5462",
    "kind": "arxiv",
    "version": 2
  }
}