Pith Number

pith:T67S34XY

pith:2016:T67S34XY2GAW34REO5XPMEMWRQ

not attested not anchored not stored refs pending

High-Performance Algorithms for Computing the Sign Function of Triangular Matrices

Oded Schwartz, Sivan Toledo, Vadim Stotland

arxiv:1607.06303 v1 · 2016-07-21 · cs.NA · cs.DC · 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{T67S34XY2GAW34REO5XPMEMWRQ}

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	2026-05-18T01:10:42.076824Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fbf2df2f8d1816df224776ef611968c1de19a05e5ea69858e4b8340dc12a293

Aliases

arxiv: 1607.06303 · arxiv_version: 1607.06303v1 · doi: 10.48550/arxiv.1607.06303 · pith_short_12: T67S34XY2GAW · pith_short_16: T67S34XY2GAW34RE · pith_short_8: T67S34XY

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/T67S34XY2GAW34REO5XPMEMWRQ \
  | 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: 9fbf2df2f8d1816df224776ef611968c1de19a05e5ea69858e4b8340dc12a293

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3e3a8de2462ba407de9afde4c69a1489392db094e8ee70845f90167654de886",
    "cross_cats_sorted": [
      "cs.DC",
      "math.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2016-07-21T12:58:36Z",
    "title_canon_sha256": "8adfcb1c30628003724e9e54cfca97d2a30436da2bf40e7317743cd03c174380"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.06303",
    "kind": "arxiv",
    "version": 1
  }
}