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Emptymind
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13 votes
4 answers
4k views

Which of the following sets has the greatest cardinality?(Math subject GRE exam 0568 Q.61 )

8 votes
4 answers
2k views

Math subject GRE Exam 9768 Q.16

6 votes
2 answers
1k views

Proving Plancherel's identity.

4 votes
3 answers
275 views

Answering a question containing $\sqrt{1.5}$ without using calculator.

4 votes
1 answer
230 views

$L^{p} (\mathbb T)$ is complete.

4 votes
3 answers
211 views

Evaluating the integral $\int_{0}^{1}\frac{x^n}{1 + x^n}\,\mathrm dx$.

4 votes
3 answers
791 views

The jacobson radical of a ring $R$ contains no idempotents other than $0$. [closed]

4 votes
1 answer
330 views

A difficulty in solving a question in chapter 8 hungerford.

4 votes
1 answer
132 views

Show that either $X$ or $Z$ is homotopy equivalent to a point.

3 votes
0 answers
70 views

Find the homotopy fibre of the map $\pi$

3 votes
3 answers
109 views

How can I find the limit of the following sequence $\sin ^2 (\pi \sqrt{n^2 + n})$?

3 votes
1 answer
8k views

Why are there no continuous one-to-one functions from (0, 1) onto [0, 1]? [closed]

3 votes
4 answers
731 views

Sketching Parametric Graph of $\sin t$ against $\cos t$ in the Fourth Quadrant

3 votes
1 answer
3k views

Uniqueness Of Fourier Series.

3 votes
3 answers
405 views

What is the first derivative and nth derivative of the following function $ y = \sqrt {2 +\sqrt {3 + \sqrt{x}}}$

2 votes
2 answers
2k views

Which of the following is true for the definite integrals shown above?

2 votes
5 answers
4k views

Is the function $x|x|$ differentiable at $0$?

2 votes
1 answer
204 views

Theorem 2.1 in Stein and Shakarachi the complex valued function case.

2 votes
1 answer
182 views

The importance of continuity of functions in proving some properties of convolution.

2 votes
1 answer
4k views

Prove that the set of all open intervals with rational endpoints are countable.

2 votes
0 answers
88 views

A question similar to theorem 2.9.1 in Bartle & Sherbert "Introduction to Real Analysis " [duplicate]

2 votes
1 answer
661 views

The nth Fourier Coefficient For Poisson Kernel.

2 votes
1 answer
182 views

Basic properties of Fourier Series. 4.

2 votes
1 answer
531 views

Pointwise convergence of Fourier series - Dirichlet theorem2

2 votes
1 answer
183 views

GRE subject exam 0568 Q.20

2 votes
2 answers
88 views

Is $\mathbb{R}$ with the usual topology a $T_2$ space but not $T_3.$

2 votes
3 answers
300 views

Math subject GRE exam 9768 Q.6

2 votes
1 answer
88 views

Subject GRE exam 9768 Q.18

2 votes
2 answers
210 views

Using the rational root test (subject Math GRE exam 9768 Q.31)

2 votes
3 answers
5k views

Number of integers between 1 and 1000 that are divisible by 30 but not divisible by 16.

1
2 3 4 5
11