(2.1) Let b> 0 and X [-b, b). Here we admit %3D B"open" in r if and only if (0} B or (-b, b) C B. (a) Give all the closed sets in 7. (b) Let C = {4}. What is C? (c) Show that 0 is a limit point of any subset of A C (-b, b).

Q: 7. (10 points) Let f: A B be onto. Prove that S((C)) = C for all sets CC B.

A:

Q: Construct bijective maps (a) from [0, 1) to (0, 2]. (b) from R − {3} to R − {1} (c) from Z to Z −…

A:

Q: 1. Let A = {a, b, c}, B = {1,2,3}, C = {x, y, z, w}, D = {4,5, 6}. Let the functions f : A → B, g :…

A:

Q: *2. Let x and y be distinct real numbers. Prove there is a neighborhood P of x and a neighborhood Q…

A:

Q: The relation R defined on a set A is antisymmetric if (a, b) ER = (b, a) E R for (A) Every (a, b) ER…

A: A relation R is said to be antisymmetric if (a,b)∈R and (b,a)∈R implies a=b

Q: A relation < is defined on R? by (x1, x2) < (y1, y2) if and only if x1 < yi and x1 + x2 2 yı + y2.…

A:

Q: Y Show that f (2)= 2+ Con formal maps %3D on %3D

A: Given that,f(z)=z+1zz=1

Q: You are given two graphs G and H with V(G) = {a, b, c, d} and V(H) = {1, 2, 3}. 1. How many…

A:

Q: 3. Let (X, 7) be a Hausdorff space. If X is finite, then show that 7 = P(X), where P(X) is a power…

A:

Q: Disprove that for any relations R and S, ran(S • R) = ran(S).

A:

Q: Given R = { (x,y) ϵ R | x^2 = y^2, x,y ϵ A } on A = {1, 2, 3, 4, 5}, which of the following…

A:

Q: B₁ = {(a, b): a, b are realt B₂B RIB is finite} I, is sopology generated by J₂ is Sopology generated…

A:

Q: b) A function g:Z→Z is defined by the rule g(m, n) = m + n Determine whether it is onto or not...

A: A function f:A→B is said to be onto or surjective if for all element b∈B there is an element a∈A…

Q: The value of the Wronskian of set of functions {x² - 3x +1, 2x² - 6x + 2} is O a. 13x O b. 7x? 2x? O…

A:

Q: SUPpose that. the functins f and q are difined ·as follows, FCX). =x -z g (x) = Aind Ź then, give HS…

A: We can find the answers as below.

Q: Please help me out

A: Equivalence Classes: The set S is divided into equivalence classes by ~, which is an equivalence…

Q: 20. Let V be an inner product space. Prove that (a) |||x|| - ||y||| ≤ ||x − y||. (b) (x, y) =…

A:

Q: 1. Graph f(x) = 3-* over the interval [-2, 2] y. 7 -8- -7+ 6+ -5-

A: The given function is:f(x)=3-x

Q: A relation R is defined on the A={1,2,3...9.10}  as follows: xRy means "3x- 2y=1"   List the…

A:

Q: 2. Prove that ƒ : (R × R, +) → (R, +) given by f(x, y) = x + y is a homomorphism. Is g : (R × R, +)…

A:

Q: (4.2) Let X = {1,2, 3, 4} and 7 = {0, {1,2,3} , {2, 3},{1},X} be the topology defined on X. (a) Show…

A:

Q: Let Z = (0, 1, 2, 3} and the relations R, S, and T on Z are as follows: %3D R = {(0, 0), (0, 1), (0,…

A: Let Z=0, 1, 2, 3 and are the relations R, S and T on Z Given  R=0,0, 0,1, 0, 3, 1,0, 1,1, 2,2, 3,0,…

Q: R= {(0,2). (1, 1). (1,3), (2, 1). (2, 2). (2,3 For relation R find the Reflexive closure; Symmetric…

A: Given:- Set A={0,1,2,3}   , relation R:A×A is defined as : R={…

Q: 15. Let x = (x1, x2). Using the feature mapping show that *(2,3)·¤((4,4) –-(2,3)·(4,4)*

A: Given that for x=x1,x2, the feature mapping is…

Q: 4. Define a relation R on N by aRb if a and b have no common factors except 1. (a) Give an example…

A: We have define  a relation R on natural numbers (N) by aRb if a and b have no common  factors except…

Q: 14. Two variables x and y are given as y = a + bx where a and 6 are constaif show that | r| 1. Or If…

A:

Q: Consider relation R={(x,y)|x divides y,xEA,y€A} on the set A={2,3,4,5,10,12,25,30}. (a) Check…

A: We are given a relation : R={(x,y)|x divides y,x∈A,y∈A}  on a set A={2,3,4,5,10,12,25,30}

Q: Which of the following is isomorphism? * f:(Z, +) → (R*, .) where f(x) = 2* O this option f: (Z, +)…

A: A mapping is said to be isomorphism if it is one-one, onto and homomorphism. A mapping f: X→Y is…

Q: (x), we - Let (-) be the evaluation inner product on P₂ at -1, 0, and 1. That is, for any p = p(x)…

A:

Q: What is the coefficient of x^6 in (2x + 3/x)^8? b)A graph G has only vertices of degree 3 and degree…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Let P(A) be the power set of a non-empty set A A relation R on P(A) is defined as follows: R=…

A: Reflexivity , Symmetry, transitivity of Power set A is explained below:-

Q: Let A={5,6,7,8,9,10,11} and define a relation S on A as follows xS y 3|(x-y) (a) Is 5S7? Why? (b) Is…

A: