Proof step e-f1a9ca5f4baaa1dd

preserver_image affine, shift 0 → concludes about basis-map coefficients of A Jacobsthal triangle. JSON

Theorem

Affine, reversal and Möbius substitutions (elementary) polytool ?

Lean (RealRooted): Polynomial.Splits.comp_of_degree_le_one

Operation

Image under a real-rootedness preserver

{
  "index_shift": 0,
  "operation": "preserver_image",
  "operator": "{\"shape\":\"affine\",\"slope\":\"1\",\"intercept\":\"-9\"}"
}

Premises

• A Jacobsthal triangle. (sequence)
  uses: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-8, 0]

Claims

• { "claim": "real_rooted", "from_index": 0, "region": { "lower": { "closed": false, "value": "1" }, "upper": { "closed": true, "value": "9" } } }
• { "claim": "interlacing", "from_index": 1, "kind": "weak", "orientation": "unordered" }

Verification and certificate

• polytool: replayed (the certificate replayed when the step was written)
• Lean: not attempted
• certificate: preserver_image, SHA-256 7cceffb46ac0555ee666f7dcd36c4e3f90b7ab6c5ec3e3f41dcd44dfaae58d5d, 19,355 bytes (3,772 compressed); download JSON

Cited by

• n-a8f637a6283d3e7d (real_rooted)
• n-a8f637a6283d3e7d (one_signed_coefficients)
• n-a8f637a6283d3e7d (interlacing)