0
Still curious? Ask our experts.
Chat with our AI personalities
LaoThe path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
RafaThere's no fun in playing it safe. Why not try something a little unhinged?
Chat with Rafa
TaigaEvery great hero faces trials, and you—yes, YOU—are no exception!
Chat with TaigaAdd your answer:
Earn +20 ptsQ: Why singleton set is open in R?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
Is power set of singleton set equal to null set?
No. Let A = {a} (a singleton set) then P(A) = {a, 0} where 0 is the null (empty) set.
Is the image of an open set under a continuous mapping need not be open?
f(x) = x^{2} is a continuous function on the set R of real numbers, and (-1, 1) is an open set in R, but f(-1, 1) = [0, 1), and [0, 1) is not an open set in R. So, f is not an open function on R.
Type of sets?
1. Null set or Empty set 2. Singleton set 3. Pair set
What set is a unit set?
That refers to a set that has exactly one element. Also known as a "singleton".
Why the set of irrational number is denoted by q'?
The set of irrational numbers is NOT denoted by Q.Q denotes the set of rational numbers. The set of irrational numbers is not denoted by any particular letter but by R - Q where R is the set of real numbers.
Trending Questions
What would the standard notation be for 406 million 430 million 500 thousand 500 be?
What is the product of 520000 and 86?
What is form CG 2100?
What number pair has an LCM of 36 and a gcf of 1?
What is 2 times 10to the twenty-third power?
What is 6000 divided by 66?
How do you convert 119 into a percentage?
What is special about sides and angle of a regular octagon?
What is the best math website that gives you the answers?
What is double 109?
What is a line on a sphere?
What is the nearest thousand of 6676660?
What is 1.41421 35623 73095 04880 16887 24209 69807 85696 71875 37694 80731 76679 73799 squared approx equal?
What goes to 10 and 21?
What is two sixths equal to?
What is x in 7x plus 7?
How much do you need to make an hour to make 52000 a year?
If two of the angles measure 120 degrees what is the measure of the other two angles?
What is 3 and 3 fourths as adecimal?
How do i write eight hundred five ten-thousands?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.