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real analysis related issues & queries in MathXchanger
If $X$ is a complex Banach space, is the set $T \in L(X)$ with finite dimensional kernel dense?
real-analysis
functional-analysis
Updated February 17, 2019 22:20 PM
0
answers
7
views
0
votes
Cantor's Theorem proof
real-analysis
Updated February 17, 2019 22:20 PM
0
answers
15
views
0
votes
Proving that $y_n$ converges given $y_{2n}, y_{2n+1}$ converges
real-analysis
proof-verification
convergence
Updated February 17, 2019 21:20 PM
0
answers
14
views
0
votes
Surface Integral of Vector Field
integration
analysis
vector-analysis
vector-fields
surface-integrals
Updated February 17, 2019 21:20 PM
0
answers
4
views
0
votes
Proving a specific set in $\mathbb R^2$ is closed.
real-analysis
Updated February 17, 2019 21:20 PM
1
answers
26
views
5
votes
Apply the Monotone Convergence Theorem to show that λ is countably additive.
analysis
measure-theory
convergence
lebesgue-integral
Updated February 17, 2019 21:20 PM
1
answers
8
views
2
votes
Can someone help me solve this limit?
real-analysis
calculus
limits
Updated February 17, 2019 20:20 PM
3
answers
23
views
1
votes
winding number of paths
complex-analysis
multivariable-calculus
winding-number
Updated February 17, 2019 20:20 PM
1
answers
13
views
1
votes
Tensor product of function spaces: does $\widehat{\bigotimes}_{\pi;1\leq k\leq n}C(X_{k})^{\prime}\cong C(\prod_{k}X)^{\prime}$ hold?
functional-analysis
banach-spaces
tensor-products
Updated February 17, 2019 20:20 PM
0
answers
6
views
0
votes
Find the closure of $C=\{f\in C([0,1]):f(0)=0\}$
functional-analysis
functions
convergence
Updated February 17, 2019 20:20 PM
0
answers
10
views
0
votes
quadratic functions in real numbers for f(x)=g(x)
analysis
quadratics
formal-proofs
Updated February 17, 2019 19:20 PM
0
answers
4
views
0
votes
Question about a Bernoulli's integration.
calculus
integration
analysis
Updated February 17, 2019 19:20 PM
2
answers
17
views
0
votes
Integrate $\int_{|z|=1}z^{3}e^{1/z}dz$ - verification
complex-analysis
proof-verification
complex-integration
cauchy-integral-formula
Updated February 17, 2019 19:20 PM
1
answers
14
views
0
votes
Geometric Interpretation of "$A,B\in \mathbb{C}$, there exists a point $a∈A$ such that $∀x∈A,y∈B $ there exists $b∈B$ such that $|a−b|≤|x−y|.$
complex-analysis
Updated February 17, 2019 18:20 PM
2
answers
11
views
0
votes
Inequality constraints and the max function
optimization
convex-analysis
convex-optimization
numerical-optimization
Updated February 17, 2019 18:20 PM
0
answers
5
views
0
votes
Is it true that every neighbourhood of zero is sum of some two other neighbourhoods of zero
real-analysis
general-topology
Updated February 17, 2019 18:20 PM
0
answers
17
views
0
votes
Convergence of certain integrals to $f(t)/2$
real-analysis
measure-theory
pde
Updated February 17, 2019 18:20 PM
1
answers
15
views
0
votes
convergence of bouded, holomorphic functions on the disk
complex-analysis
uniform-convergence
holomorphic-functions
Updated February 17, 2019 17:20 PM
0
answers
5
views
0
votes
Why is $\lim\limits_{n\to\infty}\left(1+\dfrac{1}{n+1}\right)^{n+1}=e$ trivial?
analysis
Updated February 17, 2019 17:20 PM
6
answers
60
views
0
votes
Does an increasing sequence of reals converge if the difference of consecutive terms approaches zero?
real-analysis
sequences-and-series
Updated February 17, 2019 17:20 PM
3
answers
61
views
1
votes
Integrate $\int_{|z|=1/2}\frac{e^{1-z}}{z^{3}(1-z)}dz$ verification
complex-analysis
proof-verification
complex-integration
cauchy-integral-formula
Updated February 17, 2019 17:20 PM
0
answers
7
views
0
votes
Why are quadratic forms required to be finite-dimensional?
functional-analysis
quadratic-forms
Updated February 17, 2019 17:20 PM
0
answers
7
views
0
votes
Why is this an non-injective immersion?
real-analysis
Updated February 17, 2019 16:20 PM
1
answers
99
views
0
votes
Finitely Additive Homogeneous Translation Invariant Measure on $\mathcal{P}(\mathbb{R})$
real-analysis
functional-analysis
measure-theory
hahn-banach-theorem
Updated February 17, 2019 16:20 PM
0
answers
6
views
1
votes
A difficult limit -> problem in getting out of the form $\infty \times 0$
real-analysis
sequences-and-series
limits
Updated February 17, 2019 16:20 PM
1
answers
36
views
1
votes
Existence of $\xi$ and $\eta$ such that $f'(\xi)+f'(\eta)=\xi+\eta$
real-analysis
calculus
Updated February 17, 2019 16:20 PM
1
answers
98
views
6
votes
Why Koopman operator is defined on $L^\infty$ space?
functional-analysis
measure-theory
operator-theory
operator-algebras
Updated February 17, 2019 15:20 PM
2
answers
23
views
1
votes
Uniform convergence with uniform bound on second derivatives implies $C^1$ convergence.
real-analysis
uniform-convergence
Updated February 17, 2019 15:20 PM
1
answers
585
views
4
votes
Computations with complex numbers
complex-analysis
complex-numbers
Updated February 17, 2019 15:20 PM
1
answers
39
views
0
votes
Convergence of Euler's definition of the Gamma function
complex-analysis
convergence
gamma-function
Updated February 17, 2019 15:20 PM
1
answers
19
views
2
votes
Does showing term-by-term differentiation of a series via uniform convergence imply that the series defines an infinitely differentiable function?
calculus
real-analysis
convergence
power-series
uniform-convergence
Updated February 17, 2019 15:20 PM
1
answers
237
views
1
votes
Cover $\lambda_n$-null set with small cubes
real-analysis
measure-theory
Updated February 17, 2019 15:20 PM
0
answers
4
views
0
votes
If all the roots of a polynomial P(z) have negative real parts, prove that all the roots of P'(z) also have negative real parts
complex-analysis
polynomials
analyticity
Updated February 17, 2019 14:20 PM
1
answers
740
views
6
votes
Properties of a step function
functional-analysis
functions
symmetry
symmetric-functions
Updated February 17, 2019 13:20 PM
1
answers
27
views
1
votes
Calculate: $lim_m\rightarrow\infty (1+\frac{1}{m})^m$
real-numbers
eulers-constant
Updated February 17, 2019 13:20 PM
0
answers
9
views
-2
votes
how functional reduce to Y(x,y,y') = y(x) + e x n(x)
real-analysis
complex-analysis
functional-analysis
vector-analysis
geometric-functional-analysis
Updated February 17, 2019 13:20 PM
0
answers
5
views
0
votes
Offset correction after weighted average
geometry
graph-theory
applications
regression-analysis
Updated February 17, 2019 13:20 PM
0
answers
4
views
0
votes
Strong limit of operator to spectral projection
functional-analysis
operator-theory
Updated February 17, 2019 12:20 PM
1
answers
9
views
1
votes
How i x j= k (vector) BUT ixj = (i)(j) (sin90) = (1)(1)(1) = 1 (Scalar)
vector-spaces
vector-analysis
vector-bundles
vector-fields
Updated February 17, 2019 12:20 PM
2
answers
20
views
0
votes
Convert numbers between 0 and infinity to numbers between 0.0 and 1.0
number-theory
real-numbers
number-line
Updated February 17, 2019 12:20 PM
3
answers
26
views
0
votes
What is the function you get when you double the arguments of sin and cos in the Fourier Series of another function?
real-analysis
analysis
pde
fourier-analysis
Updated February 17, 2019 11:20 AM
1
answers
12
views
0
votes
$\sum_{\omega\in \mathbb{Z}(i)^*} |\omega|^{-2}$ does not converge.
complex-analysis
convergence
elliptic-functions
Updated February 17, 2019 11:20 AM
4
answers
28
views
1
votes
Show that if $\phi \circ T$ is bounded for every $\phi\in Y^*$ then $T$ is bounded
functional-analysis
unbounded-operators
Updated February 17, 2019 11:20 AM
0
answers
7
views
1
votes
second order homogeneous differential equation method
real-analysis
ordinary-differential-equations
Updated February 17, 2019 11:20 AM
1
answers
14
views
1
votes
Example of a function which is continuous and $1$-periodic but not differentiable
real-analysis
Updated February 17, 2019 10:20 AM
2
answers
15
views
0
votes
Preimage of continuous one-to-one function on connected domain is not continuous.
real-analysis
general-topology
analysis
continuity
metric-spaces
Updated February 17, 2019 09:20 AM
0
answers
5
views
0
votes
Exercise 36 Ch 1 in Stein's Real Analysis
real-analysis
measure-theory
lebesgue-measure
Updated February 17, 2019 09:20 AM
0
answers
8
views
1
votes
Differentation of vector
calculus
multivariable-calculus
vector-analysis
Updated February 17, 2019 09:20 AM
1
answers
11
views
0
votes
∫^∞_-∞ δ(x) ψ(x) dx= Constant
functional-analysis
Updated February 17, 2019 09:20 AM
0
answers
13
views
-1
votes
I am stuck somewhere in this analysis problem
real-analysis
continuity
Updated February 17, 2019 08:20 AM
2
answers
21
views
0
votes
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