Elias

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154 Answers

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1
Definition of Lebesgue-Stieltjes measure on $\mathbb R$
1
Sequence $(a_n)$ s.t $\sum\sqrt{a_na_{n+1}}<\infty$ but $\sum a_n=\infty$
1
$\epsilon$-$\delta$ proof
0
Book Suggestions for an Introduction to Measure Theory
2
Positive semidefiniteness of a block matrix of positive semidefinite matrices
4
Free online mathematical software
0
Primitive function of $x^3 \sin x^2$
0
When $f(x+1)-f(x)=f'(x)$, what are the solutions for $f(x)$?
0
How do I evaluate a definite integral involving trigonometric functions?
0
Convergence Newton's Method for this system
2
Reference request: Newton-Kantorovich hypothesis for polynomials of integral coefficients
0
Interchanging supremum and integral (another question)
2
Without a calculator, behavior of$ f(x) = e^{(2x-x^2)}$. What does the concavity tell me?
3
Two Formulas for Radius of Convergence of power series.
15
How can I prove that $xy\leq x^2+y^2$?
1
Fast way to calculate determinant for a block matrix
1
$\frac{1}{1-x}$ series expansion
0
Matrix Representation of Operators in Infinite Dimensional (Separable) Hilbert Spaces
0
Is my understanding of the Supremum correct?
1
Suppose $f(x)$ is such that $\int_{-\infty}^\infty e^{tx} f(x)dx = \arcsin (t - \sqrt{1/2})$
1
Question about interchanging limits
3
Show that every subspace of $\mathbb{R}^n$ is a kernel of a linear map.
0
Calculation of a derivative
0
Singular matrix characterization
0
Suppose for all positive integers $n$, $|x_n-y_n|< \frac{1}{n}$ Prove that $(x_n)$ is also Cauchy.
0
Gradient with respect to a matrix variable
1
Matrix inverse identity
0
Find area bounded by two unequal chords and an arc in a disc
1
what does $(\Omega^T,\mathcal{A}^T)$ mean?
1
$A$ Positive Definite -> Show That There Exists an Invertible Matrix $B$ Such That $A=B^TB$.
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