![subject](/tpl/images/cats/mat.png)
Mathematics, 05.01.2021 14:00 kakesheco4210
Let X be a topological space and let C and U be subsets of X. Define C to be closed if C contains all its limit points and define U to be open if every point p ∈ U has a neighborhood which is contained in U. Assuming these definitions show that the following statements are equivalent for a subset S of X. i) S is closed in X; ii) X – S is open in X; iii) S = [S].
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Tim earns $120 plus $30 for each lawn he mows.write an iniqualityvto represent how many lawns he needs to mow to make more than $310
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:30
Consider the input and output values for f(x) = 2x - 3 and g(x) = 2x + 7. what is a reasonable explanation for different rules with different input values producing the same sequence?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
Define the type of sequence below. 7, 14, 28, 56, 112, a. neither arithmetic nor geometric b. arithmetic c. both arithmetic and geometric d. geometric
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Let X be a topological space and let C and U be subsets of X. Define C to be closed if C contains al...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
English, 04.06.2021 19:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/istoriya.png)
History, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 04.06.2021 19:20