### Questions (202)

 9 Problem 9 - Chapter 5 - Evans' PDE (First Edition) 8 Evaluate $\sum_{n=1}^{\infty} \frac{\sin \ n}{ n }$ using the fourier series 6 a Differential inequality without integration 6 Basic exercise about Sobolev spaces 5 about weak convergence in $L^{2}(0,T;H)$

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 +5 Dirichlet boundary value problem in convex domains with discontinuous boundary values +5 about weak convergence in $L^{2}(0,T;H)$ +5 about weak derivative of Bochner integrable function +5 a Differential inequality without integration

 7 Proving convergence of $\sum \frac{\sin n}{2^n}$ 7 Isolate y in this equation: $y ^ 2 + y = x$ 5 What are the most overpowered theorems in mathematics? 4 Proving Every open set in $\Bbb R$ is a countable union of open intervals. 4 Evaluating $\int \frac{L}{E-iR}\operatorname d i$

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 20 real-analysis × 58 5 analysis × 38 12 calculus × 21 5 measure-theory × 31 9 algebra-precalculus × 2 5 integration × 6 7 convergence × 3 5 lebesgue-integral × 3 7 sequences-and-series × 3 4 general-topology × 22

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