Proof step

Affine, reversal and Möbius substitutions (elementary)

Image under a real-rootedness preserver mobius, shift 0

Concludes

theta_plus_one of basis-map coefficients of A scaled Hermite triangle.

Premises

theta_plus_one of basis-map coefficients of A scaled Hermite triangle.
sequence: Every row P_n, n >= 1, is zero or real-rooted with all roots in (-inf, 0]

Theorem

polytool ?

Lean

RealRooted route fTransform RealRooted.splits_fPolynomial

Checked

polytool replayed · Lean not attempted

Technical details

Step id

e-9cd0f3d4334cc33e · JSON

Operation

Image under a real-rootedness preserver

{
  "index_shift": 0,
  "operation": "preserver_image",
  "operator": "{\"shape\":\"mobius\",\"a\":\"1\",\"b\":\"0\",\"c\":\"1\",\"e\":\"1\",\"schedule\":{\"first_index\":1,\"first_degree\":2,\"step\":1}}"
}

Claims

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

Certificate

preserver_image, SHA-256 80a35ad682d93e6ecbc087ef0f6ce912cc139909471b9f9e620798f7cd4172e8, 8,487 bytes (2,395 compressed); download

polytool replayed the certificate when the step was written.

Cited by

n-9c4445c28baba047 (one_signed_coefficients)
n-9c4445c28baba047 (hadamard_kernel)
n-9c4445c28baba047 (real_rooted)