Proof step

Geometric basis map (elementary)

Image under a basis map u^k -> P_k A007318

Concludes

shift_x_plus_one of basis_map_A013611 of narayana

Premises

basis_map_A013611 of narayana
sequence: Every row P_n, n >= 1, is zero or real-rooted with all roots in (-inf, 0]

Theorem

polytool ?

Checked

polytool replayed · Lean not attempted

Technical details

Step id

e-2b30cfe0c65df0c9 · JSON

Operation

Image under a basis map u^k -> P_k

{
  "map": "A007318",
  "operation": "basis_map"
}

Claims

{
  "claim": "real_rooted",
  "from_index": 1,
  "region": {
    "upper": {
      "closed": true,
      "value": "0"
    }
  }
}

{
  "claim": "interlacing",
  "from_index": 2,
  "kind": "weak",
  "orientation": "unordered"
}

Certificate

basis_map, SHA-256 93ac43a2e04076a6f413b41e0e12dd961db055aa6eaadaa5967930f973a834aa, 14,155 bytes (2,662 compressed); download

polytool replayed the certificate when the step was written.

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