Isomorphism

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36 Answers

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24
Prove that odd perfect square is congruent to $1$ modulo $8$
8
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8
Show that $f(x)$ has no repeated roots.
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How to write in $2^x=5$ in logarithmic form?
5
Solve $\sqrt[3]{x+10}-\sqrt[3]{x-10}=2$.
3
Using induction to prove P(k) with P(k-1)
3
Estimating $\pi$ very accurately
3
Different equivalence relations of the set $\{a,b\}$
3
Is $f:\mathbb Z \times \mathbb Z \to \mathbb Z$, $f(m,n)=31m+23n$ injective?
3
How to prove this inequality $x,y\in\Bbb R$, $|x|<1,|y|<1$ show that $\bigg|\frac{x-y}{1-xy}\bigg| < 1$ (and similar ones)
2
Finding $A,B,C,D \subseteq \{1,2,…n\}$ such that $A \cup B \cup C \cup D = \{1,2,…,n\}$
2
$h\left(\frac{m}{2^n}\right)=0$ $\forall m\in\mathbb{Z},n\in\mathbb{N}$ implies $h(x)=0$ $\forall x\in\mathbb{R}$ if $h$ is continuous.
2
how to find $|GL_2(F_p)|$
2
Number of points on line segment
2
A question on probability measures on uncountable spaces
2
Karnaugh Map for an expression with two terms
1
Why is this last step even necessary in this proof with open sets?
1
Card probabilities
1
Modular Quadratic Formula
1
What is three different way to solve this probability / combinatorics problem of dice
1
what's the algebra (if any) behind converting f(x) for a circle to a parametric equation
1
Linear transformation
1
The convergence of the sequence $x_{n+1}= \frac{n}{n+1} x_n$
1
$\sup$ of set of limit points is in the set
1
Proof of test of collinearity and coplanarity
1
Jordan Canonical form of a matrix over rationals whose all entries are 1.
0
How do I evaluate the following expression?
0
Range of a function
0
This map $f(x)=x^{-1}$ is an automorphism if and only if $F$ has at most four elements
0
How many ways are there to choose 10 objects from 6 distinct types when…
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