Abstract
Let B be a Brownian motion, and let \(\mathcal{C}_{\text{p}} \) be the space of all continuous periodic functions f ℝ→ℝ with period 1. It is shown that the set of all f→\(\mathcal{C}_{\text{p}} \) such that the stochastic convolution \(X_{f,B} (t) = \int_0^t {f(t - s){\text{d}}B(s),t \in [0,1]} \) does not have a modification with bounded trajectories, and consequently does not have a continuous modification, is of the second Baire category.
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Brzezniak, Z., Peszat, S. & Zabczyk, J. Continuity of Stochastic Convolutions. Czechoslovak Mathematical Journal 51, 679–684 (2001). https://doi.org/10.1023/A:1013752526625
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DOI: https://doi.org/10.1023/A:1013752526625