1. Recall the definition of red, green, blue numbers. Let R denote the set of red numbers. Let G be the set of green numbers, and let B denote the set of blue numbers. Is R S G S B = Z. Here Z is the set of all intergers. Explain.
5. Let R denote the set of real numbers. Which of the following subsets of R xR can be written as Ax B for appropriate subsets A, B of R? In case of a positive answer, specify the sets A and B. (a) {(z,y)12z<3, 1<y< 2}, (b) {z,)2+y= 1), (c) {(z,y)|z= 2, y R), (d) {(z,y)|z,yS 0}, (e) {(z,y) z y is an integer).
5. Consider an experiment in which the sample space Ω is precisely the real line 9t -(-00,00). Let B denote the Borel σ-algebra on the sample space Ω, ie., B is the σ-algebra generated by all the open intervals of the form (a,b), for-oo 〈 a 〈 b〈00, (a) Show that 3 contains all closed intervals of the form lp,91 for all-oo 〈 pくqく00, (b) Show that B contains all finite collections {xi,x2, - .. ,xn) of n distinct real...
Need help with 8 and 9 only please QUESTION6 Let R denote the set of positive real numbers. Consider the bijection f R R, where for everyxeR, x) 12. What is flos? o b._1 ?? od.1 QUESTION 7 Let R+ denote the set of positive real numbers. Consider the bijection g: R R+, where for every ? ? R, gw-22x+1. what is g-1(O? a. (00g2x-1)/2 C.0920x/2)-1
Question 1: Let R be the set of real numbers and let 2R be the set of all subsets of the real numbers. Prove that 2 cannot be in one-to-one correspondence with R. Proof: Suppose 2 is in one-to-one correspondence with R. Then by definition of one- to-one correspondence there is a 1-to-1 and onto function B:R 2. Therefore, for each x in R, ?(x) is a function from R to {0, 1]. Moreover, since ? is onto, for every...
7. Let A, , An be non-empty subsets of a finite set Ω. If 1 k n and Ek is the set of elements in Ω which belong to at least k of the Ai's show that Pal i-1 7. Let A, , An be non-empty subsets of a finite set Ω. If 1 k n and Ek is the set of elements in Ω which belong to at least k of the Ai's show that Pal i-1
5. Let x, y denote real numbers. Consider the statement 3r: (Vy: y(x + 1) ^ 5) Is it true or false? State your answer, "true"" false", and prove it 5. Let x, y denote real numbers. Consider the statement 3r: (Vy: y(x + 1) ^ 5) Is it true or false? State your answer, "true"" false", and prove it
Let S be the set/vector space of all real numbers of the form a sart(2)+ b'pi, where a, b are any real numbers, where we add these numbers the usual way, and multiply by real number scalars the usual way. Find, another, simpler way, of describing this vector space
Let the domain for x and y be R, the set of real numbers. (a) Determine the truth value of ∀x∃y (y = √ x). Explain (b) Determine the truth value of ∃y∀x (y = √ x). Explain
Let Rj be the set of all the positive real numbers less than 1, i.e., R1 = {x|0 < x < 1}. Prove that R1 is uncountable.