Proof step

Affine, reversal and Möbius substitutions (elementary)

Image under a real-rootedness preserver reversal, shift 0

Concludes

Triangle read by rows: t(n,m) = binomial(2*n,2*m) * binomial(n,m).

Premises

Triangle read by rows: t(n,m) = binomial(2*n,2*m) * binomial(n,m).
sequence: Every row P_n, n >= 1, is zero or real-rooted with all roots in (-inf, 0]

Theorem

polytool ?

Lean

RealRooted route reversed RealRooted.X_pow_mul_reverse_eq_zero_or_splits, RealRooted.reflect_eq_zero_or_splits

Checked

polytool replayed · Lean not attempted

Technical details

Step id

e-d0cb16645a9ff13d · JSON

Operation

Image under a real-rootedness preserver

{
  "index_shift": 0,
  "operation": "preserver_image",
  "operator": "{\"shape\":\"reversal\",\"schedule\":{\"first_index\":1,\"first_degree\":2,\"step\":1}}"
}

Claims

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

Certificate

preserver_image, SHA-256 1303cf4421795e44c64ff14a71c6a41547011ce48c750fbff6b83c3053947edb, 10,469 bytes (2,497 compressed); download

polytool replayed the certificate when the step was written.

Cited by

n-b002679da3d71a0f (real_rooted)
n-b002679da3d71a0f (one_signed_coefficients)
n-b002679da3d71a0f (hadamard_kernel)