Pith Number

pith:4EMZCIK5

pith:2012:4EMZCIK5PTRAR4TLYTRNJEX3HO

not attested not anchored not stored refs pending

Recursive Schur Decomposition

Bobby Philip, Rahul S. Sampath, Srdjan Simunovic, Srikanth Allu

arxiv:1210.6266 v1 · 2012-10-23 · math.NA · cs.DC · cs.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{4EMZCIK5PTRAR4TLYTRNJEX3HO}

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	2026-05-18T03:42:32.792909Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e11991215d7ce208f26bc4e2d492fb3bbb72563f24e378ceaaa665de7f82d2cc

Aliases

arxiv: 1210.6266 · arxiv_version: 1210.6266v1 · doi: 10.48550/arxiv.1210.6266 · pith_short_12: 4EMZCIK5PTRA · pith_short_16: 4EMZCIK5PTRAR4TL · pith_short_8: 4EMZCIK5

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/4EMZCIK5PTRAR4TLYTRNJEX3HO \
  | 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: e11991215d7ce208f26bc4e2d492fb3bbb72563f24e378ceaaa665de7f82d2cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f755323918e60ef5793763bdc4b9556830d1e393ab255a2073055b39db962829",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-10-23T15:19:13Z",
    "title_canon_sha256": "76c81cac5c2531bedf332391b9d0fbe63056dfe71ab3a4693415c55f71453634"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.6266",
    "kind": "arxiv",
    "version": 1
  }
}