Proof step e-8efc9aafb30c2198

preserver_image reversal, shift 0 → concludes about Pascal-(1,2,1) array read by antidiagonals. JSON

Theorem

Affine, reversal and Möbius substitutions (elementary) polytool ?

Lean (RealRooted): route reversed RealRooted.X_pow_mul_reverse_eq_zero_or_splits, RealRooted.reflect_eq_zero_or_splits

Operation

Image under a real-rootedness preserver

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

Premises

• Pascal-(1,2,1) array read by antidiagonals. (sequence)
  uses: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]

Claims

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

Verification and certificate

• polytool: replayed (the certificate replayed when the step was written)
• Lean: not attempted
• certificate: preserver_image, SHA-256 4c55241c158374a82bebc56a4b4cebcacf487f6d68583acd5a486c3b334a3ffa, 18,901 bytes (4,444 compressed); download JSON

Cited by

• n-f25cd955a876cde3 (one_signed_coefficients)
• n-f25cd955a876cde3 (hadamard_kernel)
• n-f25cd955a876cde3 (real_rooted)