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coffeemath
  • Member for 6 years, 8 months
  • Last seen more than a week ago
14 votes
Accepted

Simple graph with 6 vertices and 11 edges

9 votes
Accepted

About Group Homomorphisms

9 votes
Accepted

Since $\zeta(1) \neq 1$, does this mean that $\zeta$ is not multiplicative?

8 votes

Find the remainder when $99!+99$ is divided by $100$

7 votes

What is the method to show exactly one positive root of a Cubic equation?

6 votes

Complex quadratic equation always comes out as wrong

6 votes

Does a finite group has subgroups of order of all divisors of its order?

5 votes

Computing the product $xy$

5 votes

Why does $\binom {3} {1} =\binom {3} {2}$?

5 votes

How to find the highest point on a lemniscate?

5 votes

Finding the discriminant of a quadratic equation from the given information on the roots of a quadratic equation

5 votes
Accepted

Restriction in the trigonometric identity of $\tan 3x$

5 votes

Average Value of a Function in an interval

5 votes

Prove that graph isn't Eulerian

4 votes

$G$ acts transitively on a set $X$, where $|X|=m\in\mathbb{Z}_{>0}$, if and only if there exsits $H\leq G$ with index $m$.

4 votes

Doubt in exercise 8.2 in Linear Algebra by Hoffman and Kunze

4 votes
Accepted

How to evenly scale down measurements in a recipe to meet certain weight by gram?

4 votes
Accepted

Why is $X=\{1,a,b\}$,with cayley table $aa=a,bb=b,ab=1,1a=a1=a,1b=1b$ not a group?

4 votes
Accepted

x greater than 0 implies x greater than or equal to 0

4 votes
Accepted

Help Find an Injective Function $f : P(\omega) \times P(\omega) \rightarrow P(\omega)$

3 votes

Does $\lim_ {(x,y)\to (0,0 )} \frac{x^3+y^3}{x^2 + y^2}$ exist?

3 votes

Extrema of implicit functions - one point - two values?!

3 votes

2+2 -> 4 or 2+2 =4

3 votes

A super weird quality of numbers that is hard to explain.

3 votes

Is $f: \Bbb{Z} \to \Bbb{Z}, f(x) = 3x + 6$ a bijection? Why?

3 votes
Accepted

$S = \{(x,y): x \text{ is a sibling of } y\}$. Why is this relation not transitive?

3 votes
Accepted

Counting number of integer solutions. Transforming restrictions / Grimaldi

3 votes
Accepted

Critical points of a function and discontinuity

3 votes
Accepted

Is there a name for this relation: for all $x$ there is $y$ such that $xRy$, and for all $x,y,z$, if $xRy$ and $xRz$, then $y=z$?

3 votes

What is the appropriate way to compute $z=\frac{1}{\sqrt{7+24i}}?$

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