Pith Number

pith:5G57XCWB

pith:2013:5G57XCWBXWQ3I35KY2HMNBBZLO

not attested not anchored not stored refs pending

Eigendecomposition of Block Tridiagonal Matrices

Aliaksei Sandryhaila, Jose M. F. Moura

arxiv:1306.0217 v1 · 2013-06-02 · math.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5G57XCWBXWQ3I35KY2HMNBBZLO}

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	2026-05-18T03:21:55.769473Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e9bbfb8ac1bda1b46faac68ec684395bb9db4cb624ad058ffb7df96c9c715d78

Aliases

arxiv: 1306.0217 · arxiv_version: 1306.0217v1 · doi: 10.48550/arxiv.1306.0217 · pith_short_12: 5G57XCWBXWQ3 · pith_short_16: 5G57XCWBXWQ3I35K · pith_short_8: 5G57XCWB

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/5G57XCWBXWQ3I35KY2HMNBBZLO \
  | 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: e9bbfb8ac1bda1b46faac68ec684395bb9db4cb624ad058ffb7df96c9c715d78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5afd5149b3305eead77055294a0854d59afce69c224386a148fc6aa8ddb25ee7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2013-06-02T15:12:35Z",
    "title_canon_sha256": "44613a8ac2b3835126a86317b8f8d3bb65ad41757ccef5a6967f6f648908c2c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.0217",
    "kind": "arxiv",
    "version": 1
  }
}