User NazimJ

8 votes

Is doing Olympiad problems in Undergrad,worth it?

answered Aug 8, 2019 at 20:47

6 votes

Accepted

Finding the area under the curve from a graph

answered Aug 1, 2019 at 20:56

5 votes

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Function that halves the angle of a complex point

answered Dec 12, 2018 at 20:23

4 votes

Finding the A=LDU factorization for matrices

answered Oct 11, 2018 at 19:37

4 votes

Example of a continuous function that don't have a continuous extension

answered Apr 7, 2019 at 2:36

4 votes

Accepted

How can be set -theoretically defined the whole collection of possible circles in a given plane P ? ( not using analytic geometry)

answered Apr 8, 2019 at 14:27

4 votes

Proving $\lim_{x\to\infty} e^{\frac{1}{x}} = 1$ using $\epsilon$ (Cauchy definition for limits)

answered Apr 23, 2019 at 16:18

4 votes

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Are proofs always synonymous with explanations?

answered Aug 28, 2019 at 22:04

4 votes

Why is $\{ x\} \in \mathcal{B}(\mathbb{R}^n)$

answered Aug 24, 2022 at 21:07

3 votes

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Why does $t = \frac ds$ and not $\frac sd$? (from $ s = \frac dt$)

answered Aug 27, 2019 at 16:12

3 votes

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7 digit number combinations where the first 3 digits must be equal to another 3.

answered Jun 22, 2020 at 15:48

3 votes

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Cantor Problem-- Finding the sum at $n=20$

answered Apr 25, 2019 at 15:43

3 votes

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Clarification about the axioms of a subspace

answered Mar 12, 2019 at 19:30

3 votes

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"Prove that a topology Ƭ on X is the discrete topology if and only if {x} ∈ Ƭ for all x ∈ X"

answered Jun 4, 2019 at 18:11

3 votes

Interpreting a problem in combinatorial geometry

answered Apr 1, 2019 at 13:28

2 votes

Please help I'm in grade 9 and excellent at maths but I keep asking why does it work

answered Apr 1, 2019 at 15:09

2 votes

Accepted

a simple connected planar graph G with 10 vertices and 25 edges have 17 faces

answered Apr 1, 2019 at 17:30

2 votes

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What does my textbook mean by Hypothesis here?

answered Mar 21, 2019 at 20:25

2 votes

Forms of sum $\frac{n(n+1)}{2}$ with natural numbers.

answered Feb 22, 2019 at 15:10

2 votes

Accepted

Verifying understanding of uniqueness of the Jordan form?

answered Oct 17, 2018 at 15:57

2 votes

$P(x)$ doesn't have a rational root?

answered Oct 25, 2018 at 20:53

2 votes

Inverse of $\frac{x}{1-x^2}$

answered Jun 11, 2019 at 17:23

2 votes

Accepted

Are closed subsets of a locally compact space, locally compact?

answered Jul 30, 2019 at 15:04

2 votes

Accepted

Take a set $D$, under what condition does there exists $\epsilon$ such that $x + \epsilon y \in D$.

answered Jul 30, 2019 at 20:14

2 votes

Accepted

De Morgan's Law and $\mathbb{R}$ and $\emptyset$ are clopen

answered Apr 26, 2019 at 21:38

2 votes

Describe the region $\{|z^2 - 1|<1\}$ of the complex plane

answered May 7, 2019 at 15:59

2 votes

Distance of two points in $\mathbb{R}^N$ $\leq$ length of curve

answered May 30, 2019 at 17:06

2 votes

How to substantiate that $\mathbb{Z}^3$ is countable

answered Apr 5, 2019 at 19:38

2 votes

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Positive divisors of prime factorization of n

answered Apr 9, 2019 at 13:15

2 votes

Accepted

Prove the following properties of a matrix

answered Jun 23, 2020 at 15:07

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157 Answers

Is doing Olympiad problems in Undergrad,worth it?

Finding the area under the curve from a graph

Function that halves the angle of a complex point

Finding the A=LDU factorization for matrices

Example of a continuous function that don't have a continuous extension

How can be set -theoretically defined the whole collection of possible circles in a given plane P ? ( not using analytic geometry)

Proving $\lim_{x\to\infty} e^{\frac{1}{x}} = 1$ using $\epsilon$ (Cauchy definition for limits)

Are proofs always synonymous with explanations?

Why is $\{ x\} \in \mathcal{B}(\mathbb{R}^n)$

Why does $t = \frac ds$ and not $\frac sd$? (from $ s = \frac dt$)

7 digit number combinations where the first 3 digits must be equal to another 3.

Cantor Problem-- Finding the sum at $n=20$

Clarification about the axioms of a subspace

"Prove that a topology Ƭ on X is the discrete topology if and only if {x} ∈ Ƭ for all x ∈ X"

Interpreting a problem in combinatorial geometry

Please help I'm in grade 9 and excellent at maths but I keep asking why does it work

a simple connected planar graph G with 10 vertices and 25 edges have 17 faces

What does my textbook mean by Hypothesis here?

Forms of sum $\frac{n(n+1)}{2}$ with natural numbers.

Verifying understanding of uniqueness of the Jordan form?

$P(x)$ doesn't have a rational root?

Inverse of $\frac{x}{1-x^2}$

Are closed subsets of a locally compact space, locally compact?

Take a set $D$, under what condition does there exists $\epsilon$ such that $x + \epsilon y \in D$.

De Morgan's Law and $\mathbb{R}$ and $\emptyset$ are clopen

Describe the region $\{|z^2 - 1|<1\}$ of the complex plane

Distance of two points in $\mathbb{R}^N$ $\leq$ length of curve

How to substantiate that $\mathbb{Z}^3$ is countable

Positive divisors of prime factorization of n

Prove the following properties of a matrix