Proof step e-3cff49c1888b5e80

theorem_check liu_wang → concludes about The truncated (4,4,1)-Pascal triangle, given by 4*C(n-2, k) + 4*C(n-2, k-1) + C(n-2, k-2) for n>=2. 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 b3cd9988fef957ddcca6fd8f5933339281b4cbac062bf3707b7f964ea8e60ca7, 2,725 bytes (1,022 compressed); download JSON

Cited by

• n-f48bed27dbc29c5f (interlacing)
• n-f48bed27dbc29c5f (real_rooted)
• n-f48bed27dbc29c5f (one_signed_coefficients)
• n-f48bed27dbc29c5f (hadamard_kernel)

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