Pith Number

pith:36S56I72

pith:2013:36S56I723YO2VRXM3AG42SEDKZ

not attested not anchored not stored refs pending

Block Tridiagonal Reduction of Perturbed Normal and Rank Structured Matrices

Gianna M. Del Corso, Luca Gemignani, Roberto Bevilacqua

arxiv:1306.5607 v1 · 2013-06-24 · 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{36S56I723YO2VRXM3AG42SEDKZ}

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	2026-05-18T00:00:45.575993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dfa5df23fade1daac6ecd80dcd4883566282befa16605912354a8688ed6544cc

Aliases

arxiv: 1306.5607 · arxiv_version: 1306.5607v1 · doi: 10.48550/arxiv.1306.5607 · pith_short_12: 36S56I723YO2 · pith_short_16: 36S56I723YO2VRXM · pith_short_8: 36S56I72

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/36S56I723YO2VRXM3AG42SEDKZ \
  | 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: dfa5df23fade1daac6ecd80dcd4883566282befa16605912354a8688ed6544cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d2818f75a19ec097cb296ca42b3e4f5f7f29569e24061fbfaf1d173630828ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-06-24T13:16:20Z",
    "title_canon_sha256": "0a7d86b8ac44d019745a86363f4a732544648c4c65b8532f31067beb5662c755"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.5607",
    "kind": "arxiv",
    "version": 1
  }
}