Proof step e-2ab1dfe057e84c9d

theorem_check liu_wang → concludes about Triangle of Stirling numbers of 2nd kind, S(n, n-k), n >= 0, 0 <= k <= 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": 1, "region": { "upper": { "closed": false, "value": "0" } } }
• { "claim": "interlacing", "from_index": 2, "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 0e8fde597188e1780a2d629caea14add9735e4599c61c2383ab7a662aaae9493, 3,713 bytes (1,245 compressed); download JSON

Cited by

• n-4ee613bf6b082e7d (one_signed_coefficients)
• n-4ee613bf6b082e7d (hadamard_kernel)
• n-4ee613bf6b082e7d (interlacing)
• n-4ee613bf6b082e7d (real_rooted)

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