Proof step e-f45969f98fa0cee8

theorem_check liu_wang → concludes about Triangle of coefficients in expansion of (1+4x)^n. JSON

Theorem

Liu–Wang theorem [LW07, Thm 2.1, Cor 2.4] ?

Operation

Theorem check of the node's own rule

{
  "operation": "theorem_check",
  "theorem": "liu_wang"
}

Premises

None: this step is a direct theorem check.

Claims

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

Verification and certificate

• polytool: replayed (the certificate replayed when the step was written)
• Lean: not attempted
• certificate: theorem_check, SHA-256 5daf192a0e9ec2bb3d3a893f6a3710c9cea000b08f58fff529d6dec78f61e53d, 2,717 bytes (1,031 compressed); download JSON

Cited by

• n-2e0409c0014ec240 (real_rooted)
• n-2e0409c0014ec240 (one_signed_coefficients)
• n-2e0409c0014ec240 (hadamard_kernel)
• n-2e0409c0014ec240 (interlacing)

References

1. [LW07] Lily L. Liu and Yi Wang. A unified approach to polynomial sequences with only real zeros. Advances in Applied Mathematics, 38(4):542–560, May 2007. doi:10.1016/j.aam.2006.02.003