Proof step
Ray basis map theorem
Image under a basis map u^k -> P_k A008277
- Concludes
- basis_map_A008277 of derivative of Triangle of coefficients in expansion of (1+2*x)^n.
- Premises
- derivative of Triangle of coefficients in expansion of (1+2*x)^n.
sequence: Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, 0]
- derivative of Triangle of coefficients in expansion of (1+2*x)^n.
- Theorem
- [MW08, Thm 2] polytool RealRooted rayBasisMap_maps_realRootedIn_iff ?
- Checked
- polytool replayed · Lean not attempted
Technical details
- Step id
e-49695d56c016a57f· JSON- Operation
- Image under a basis map u^k -> P_k
{ "map": "A008277", "operation": "basis_map" } - Claims
{ "claim": "real_rooted", "from_index": 0, "region": { "upper": { "closed": true, "value": "0" } } }- Certificate
basis_map, SHA-2561a99104137e81e413e6b51804863672716c43345b5a4b9a3da582656de24f4ba, 13,794 bytes (2,483 compressed); downloadpolytool replayed the certificate when the step was written.- Cited by
n-84c3b1d2f94c6d82(real_rooted)n-84c3b1d2f94c6d82(one_signed_coefficients)n-84c3b1d2f94c6d82(hadamard_kernel)
References
- [MW08] Shi-Mei Ma and Yi Wang. q-Eulerian polynomials and polynomials with only real zeros. The Electronic Journal of Combinatorics, 15(1):Research Paper 17, January 2008. doi:10.37236/741