Proof step
Geometric basis map (elementary)
Image under a basis map u^k -> P_k A007318
- Concludes
- shift_x_plus_one of theta_plus_one of a(n) = 1 if n is of the form m(m+3)/2, otherwise 0.
- Premises
- derivative of basis-map coefficients of A scaled Hermite triangle.
sequence: Every row P_n, n >= 1, is zero or real-rooted with all roots in (-inf, 0]
- derivative of basis-map coefficients of A scaled Hermite triangle.
- Theorem
- polytool ?
- Checked
- polytool replayed · Lean not attempted
Technical details
- Step id
e-a6b241c492930a0c· JSON- Operation
- Image under a basis map u^k -> P_k
{ "map": "A007318", "operation": "basis_map" } - Claims
{ "claim": "real_rooted", "from_index": 1, "region": { "upper": { "closed": true, "value": "0" } } }{ "claim": "interlacing", "from_index": 2, "kind": "weak", "orientation": "unordered" }- Certificate
basis_map, SHA-256640b220b50114543f9862de88cf3ffdd019040e9f8d67d1c6b51d6fe452eeec8, 14,925 bytes (2,800 compressed); downloadpolytool replayed the certificate when the step was written.- Cited by
n-50cc4389671313dc(one_signed_coefficients)n-50cc4389671313dc(hadamard_kernel)n-50cc4389671313dc(real_rooted)n-50cc4389671313dc(interlacing)