# Tag «group»

## 抽象代数代写| Permutations. Cycles

1. Permutation group Let $X$ be a finite set. Fo …

## 抽象代数代写| Lagrange’s theorem

1. Cosets and Lagrange’s theorem 2.&#x00A0 …

## 抽象代数代写| Cosets

1. Isomorphisms We see that cyclic group of orde …

## 抽象代数代写| Isomorphisms

1. Order of an element Recall that the order of …

## 抽象代数代考| Set Theory

The foundation of the modern mathematical language lies …

## 抽象代数代考| Set theory：Sets and functions

Sets consist of elements. If $X$ is a set, we write \$x …