Proof step

Geometric basis map (elementary)

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

Concludes

Premises

shift_x_plus_one of Riordan array ((1+x)^3,x).
sequence: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]

Theorem

polytool ?

Checked

polytool replayed · Lean not attempted

Technical details

Step id

e-59fd8d709ac12cf4 · JSON

Operation

Image under a basis map u^k -> P_k

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

Claims

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

Certificate

basis_map, SHA-256 ccd62e3e53b0aff175a3c3e7b1fe9266bc34681680b29cfa5e8263351899c77a, 6,922 bytes (1,404 compressed); download

polytool replayed the certificate when the step was written.

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