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Banach spaces, function spaces, real functions, integral transforms, theory of distributions, measure theory.

3 votes
0 answers
132 views

Poincare inequality for the measure of Brownian path

I am wondering if the Poincare inequality holds for the Brownian path space. As the simplest example, let $\{w_t, t \in [0, 1]\}$ be a 1-d standard BM: has independent increments and continuous path …
gregarki khayal's user avatar
1 vote
0 answers
502 views

Separability of the space $C(C[0, 1], \mathbb{R})$

Let $E=C([0, 1])$ be the space of all real-valued continuous functions on $[0, 1]$, equipped with the uniform norm. $C(E)$ stand for the continuous real-valued functions on $E$. I am wondering that …
gregarki khayal's user avatar
0 votes
1 answer
190 views

The eigenfunctions of an operator commuting with all rotations.

When reading the paper E. Carlen, J. Geronimo & M. Loss: SIAM J. MATH. ANAL., vol. 40, no. 1, 327-374 I found an argument like the following. Given an bounded and self-adjoint linear operator $K: …
gregarki khayal's user avatar