- #1
appelberry
- 23
- 0
Does anyone know how to prove the following identity:
[tex]\Sigma_{k=0}^{n}\left(\stackrel{n}{k}\right) H_{k}(x)H_{n-k}(y)=2^{n/2}H_{n}(2^{-1/2}(x+y))[/tex]
where [tex]H_{i}(z)[/tex]represents the Hermite polynomial?
[tex]\Sigma_{k=0}^{n}\left(\stackrel{n}{k}\right) H_{k}(x)H_{n-k}(y)=2^{n/2}H_{n}(2^{-1/2}(x+y))[/tex]
where [tex]H_{i}(z)[/tex]represents the Hermite polynomial?