An integrable and periodic function f(x)
31319
An integrable and periodic function $f(x)$ satisfies $\int_{0}^{T}f(x)dx=\int_{a}^{a+T}f(x)dx$.
623
variation of a function over countable intervals
28888
The functional $I[w] = \int_U \frac{1}{2} |Dw|^2 - fw \, dx$ is weakly lower semicontinuous
158230
prove that a non constant periodic, continuous function has a "smallest period"
47498
Integration and theorems on continuous functions
27705
Proof of $\int_{[0,\infty)}pt^{p-1}\mu(\{x:|f(x)|\geq t\})d\mu(t)=\int_{[0,\infty)}\mu(\{x:|f(x)|^p\geq s\})d\mu(s)$
112501
A funtion and its fourier transformation cannot both be compactly supported unless f=0
151936
Pointwise Convergence and Convergence in the mean of Riemann-integrable functions
80210
It is posible to have a function $f$ with the following property?
88097
Fourier series for $f(x)=(\pi -x)/2$
30219
Sufficient condition(s) for $f'$ to be Riemann integrable
144331
Periodic function implies periodic primitive?
54137
Find a non-negative function on [0,1] such that $t\cdot m(\{x:f(x) \geq t\}) \to 0$ that is not Lebesgue Integrable
148914
Total Variation and indefinite integrals
86618
Approximating Riemann integrable functions
92777
Riemann integrabilty of an indicator function
131992
A problem on continuous functions