Pith Number

pith:MI4ICL2Q

pith:2016:MI4ICL2QJPI3IGTCQXZPXJEO7B

not attested not anchored not stored refs pending

Eigenvalue placement for regular matrix pencils with rank one perturbations

Carsten Trunk, Hannes Gernandt

arxiv:1604.06671 v2 · 2016-04-12 · math.RA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MI4ICL2QJPI3IGTCQXZPXJEO7B}

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	2026-05-18T00:53:20.901450Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6238812f504bd1b41a6285f2fba48ef8455f2ed2bec30a52746192c23c498e87

Aliases

arxiv: 1604.06671 · arxiv_version: 1604.06671v2 · doi: 10.48550/arxiv.1604.06671 · pith_short_12: MI4ICL2QJPI3 · pith_short_16: MI4ICL2QJPI3IGTC · pith_short_8: MI4ICL2Q

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/MI4ICL2QJPI3IGTCQXZPXJEO7B \
  | 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: 6238812f504bd1b41a6285f2fba48ef8455f2ed2bec30a52746192c23c498e87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ebe52c64aa46f40f0968c34c32c2624ce7fc87f6cfa7db7f5feeae99a0d9222",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2016-04-12T09:41:24Z",
    "title_canon_sha256": "2ec1593b58905ddadd71f846632e7a2fab9b4aa87ae897177d42b9a3bd284e4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.06671",
    "kind": "arxiv",
    "version": 2
  }
}