Proof step
Affine, reversal and Möbius substitutions (elementary)
Image under a real-rootedness preserver reversal, shift 0
- Concludes
- reversal of basis_map_A013609 of Riordan array (1-x,x/(1-x)).
- Premises
- basis_map_A013609 of Riordan array (1-x,x/(1-x)).
sequence: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]
- basis_map_A013609 of Riordan array (1-x,x/(1-x)).
- Theorem
- polytool ?
- Lean
- RealRooted
route
reversedRealRooted.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-9fbeb37a7facd697· JSON- Operation
- Image under a real-rootedness preserver
{ "index_shift": 0, "operation": "preserver_image", "operator": "{\"shape\":\"reversal\",\"schedule\":{\"first_index\":0,\"first_degree\":2,\"step\":1}}" } - Claims
{ "claim": "real_rooted", "from_index": 0, "region": { "upper": { "closed": true, "value": "0" } } }- Certificate
preserver_image, SHA-25667fcfa5ccb5649ba8a761b35da9db216633218458ea470cee6f1ea6d697e22e3, 7,932 bytes (2,295 compressed); downloadpolytool replayed the certificate when the step was written.- Cited by
n-4817ba9964cf3d57(real_rooted)n-4817ba9964cf3d57(one_signed_coefficients)n-4817ba9964cf3d57(hadamard_kernel)