Proof step e-8b3bd733bf151a52

basis_map A007318 → concludes about basis_map_A007318 of Triangle read by rows: coefficients of 1; 1(X+2); 1(X+2)(X+3); 1(X+2)(X+3)(X+4); .... JSON

Theorem

Geometric basis map (elementary) polytool ?

Operation

Image under a basis map u^k -> P_k

{
  "map": "A007318",
  "operation": "basis_map"
}

Premises

• Triangle read by rows: coefficients of 1; 1(X+2); 1(X+2)(X+3); 1(X+2)(X+3)(X+4); .... (sequence)
  uses: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]

Claims

• { "claim": "real_rooted", "from_index": 0, "region": { "upper": { "closed": true, "value": "0" } } }
• { "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: basis_map, SHA-256 90ca41ee1bf185a459059e6240d79448ba28f94b87dfd108889d42c20995dc36, 10,157 bytes (2,277 compressed); download JSON

Cited by

• n-b8883330fe0b24f8 (real_rooted)
• n-b8883330fe0b24f8 (one_signed_coefficients)
• n-b8883330fe0b24f8 (hadamard_kernel)
• n-b8883330fe0b24f8 (interlacing)