Does the Fourier transform map $L^1(\mathbb{R})$ into itself?
74339
Integrable function whose Fourier transform is not integrable
2129
Showing that the derivative operator is not bounded on $L^2 (\mathbb{R})$
67344
What is spectrum for Laplacian in $\mathbb{R}^n$?
101893
Is there a classification of regular maps $\mathbb{P}^1(k)\to\mathbb{A}^1(k)$?
149997
Convolution operator has norm 1 with respect to $L^2$ norm
136996
Fourier transform of function composition
47096
translation invariant of integral on $\mathbb{R}$
75059
Let $T:\mathbb{R}^n\to \mathbb{R}^n$ be a linear transformation...
106841
Meaning of complex Fourier transformation function
146067
Creating intuition about Laplace & Fourier transforms
30936
Does the operator $(\hat{f}\cdot m )^\vee$ maps Schwartz in it self?
80588
The Fourier transform of a "comb function" is a comb function?
100975
Dirac Delta function inverse Fourier transform
112501
A funtion and its fourier transformation cannot both be compactly supported unless f=0
119447
Scaling property of  Fourier series and Fourier Transform
149564
Showing that a function is in $L^1$
79132
Fourier transform of modified Bessel function of the second kind