Homework Answers
13 14 Exercise 13: Let (xn) be a bounded sequence a S be the set of...
13 14
Exercise 13: Let (xn) be a bounded sequence a S be the set of limit points of (n), i.e. S:{xER there exists a subsequence () s.t. lim } ko0 Show lim inf inf S n-o0 Hint: See lecture for proof lim sup Exercise 14: (Caesaro revisited) Let (x) be a convergent sequence. Let (yn) be the sequence given by Yn= n for all n E N. Show that lim sup y lim sup n n-+00 n o0
Please help me solve 3,4,5 3- For all n € N, let an = 1. Let...
Please help me solve 3,4,5
3- For all n € N, let an = 1. Let S = {an in€ N}. 3-1) Use the fact that lim - = 0 and the result of Exercise 1 to show that 0 ES'. Ron 3-2) Use the result of Exercise 2 to show that S = {0}. 4- Prove that 4-1) N' = 0. 4-2) Q =R. 5- Recall that a set KCR is said to be compact if every open cover...
4. (20 pts) Let {xn} be a Cauchy sequence. Show that a) (5 pts) {xn} is...
4. (20 pts) Let {xn} be a Cauchy sequence. Show that a) (5 pts) {xn} is bounded. Hint: See Lecture 4 notes b) (5 pts) {Jxn} is a Cauchy sequence. Hint: Use the following inequality ||x| - |y|| < |x - y|, for all x, y E R. _ subsequence of {xn} and xn c) (5 pts) If {xnk} is a See Lecture 4 notes. as k - oo, then xn OO as n»oo. Hint: > d) (5 pts) If...
1. Let {n} be a sequence of non negative real numbers, and suppose that limnan =...
1. Let {n} be a sequence of non negative real numbers, and suppose that limnan = 0 and 11 + x2 + ... + In <oo. lim sup - n-00 Prove that the sequence x + x + ... + converges and determine its limit. Hint: Start by trying to determine lim supno Yn. What can you say about lim infn- Yn? 3 ) for all n Expanded Hint: First, show that given any e > 0 we have (...
Exercise 2.3.7: Let {xn} and {yn} be bounded sequences. a) Show that {Xn+yn} is bounded. b)...
Exercise 2.3.7: Let {xn} and {yn} be bounded sequences. a) Show that {Xn+yn} is bounded. b) Show that (lim inf xn) + (lim inf yn) < lim inf (Xn tyn). noo Hint: Find a subsequence {Xn; +yn;} of {Xn +yn} that converges. Then find a subsequence {Xnm;} of {Xn;} that converges. Then apply what you know about limits. n->00 c) Find an explicit {{n} and {yn} such that noo (lim inf xn) + (lim inf yn) <lim inf (Xn+yn). noo...
8 arbitrary set. K is Cousider E} n=1 nieU and Let (X, K) be a measure space where X is an sigma-algebra of subsets...
8 arbitrary set. K is Cousider E} n=1 nieU and Let (X, K) be a measure space where X is an sigma-algebra of subsets of X and is a measure sequenc o clemenis of K We delin lim supn(Fn) liminfn(En)- U then prove: (a) lim in(E)) lim inf(u(E,) (b) T J (c) If sum E,)x, then (lim sup(E)) = 0 x X) <oc lor somc nE N, then lim supn (Fn)> lim sup(u(F,n ))
8 arbitrary set. K is Cousider...
4. Consider the sequence {z,.) such that z1-0, z2-1 and æn-telths,Yn (i) Show that (n) is convergent by showing that the subsequence of odd-indexed terms is monotonic increasing and subsequence o...
4. Consider the sequence {z,.) such that z1-0, z2-1 and æn-telths,Yn (i) Show that (n) is convergent by showing that the subsequence of odd-indexed terms is monotonic increasing and subsequence of even-indexed terms is monotonic decreasing (ii) Find the limit of {%) (Hint: Consider x,-h-i)
4. Consider the sequence {z,.) such that z1-0, z2-1 and æn-telths,Yn (i) Show that (n) is convergent by showing that the subsequence of odd-indexed terms is monotonic increasing and subsequence of even-indexed terms is monotonic...
Question 2. 25 marks] (Problem 38 in Section 13.4 of Royden and Fitzpatrick's book) Let (Y, ll-ll...
Question 2. 25 marks] (Problem 38 in Section 13.4 of Royden and Fitzpatrick's book) Let (Y, ll-lly) be a normed vector space. Show that (Ý, IHIY) is Banach if and only if there exist a Banach space (X, l-1x) and an open operator T E (X,Y) Hint: You may use without proof the following two facts (which we used in our proof of Riesz-Fischer's Theorem for LP-spaces): There erists a subsequence (vn)nN such that lv +) - vpt)ly S 2-"...
real analysis Find the limit of the sequence as n to or indicate that it does...
real analysis
Find the limit of the sequence as n to or indicate that it does not converge en2 0 (0,0,1) O Does not converge 0 (0, 1, 7) 0 (0,0,0) Is it true that any unbounded sequence in RN cannot have a convergent subsequence? Please, read the possible answers carefully. 0 Yes, because any sequence in RN is a sequence of vectors, and convergence for vectors is not defined. o Yes, it is true: any unbounded sequence cannot have...
ANSWER 1 & 2 please. Show work for my understanding and upvote. THANK YOU!! Problem 1....
ANSWER 1 & 2 please. Show work for my understanding and
upvote. THANK YOU!!
Problem 1. Let {x,n} and {yn} be two sequences of real numbers such that xn < Yn for all n E N are both convergent, then lim,,-t00 Xn < lim2+0 Yn (a) (2 pts) Prove that if {xn} and {yn} Hint: Apply the conclusion of Prob 3 (a) from HW3 on the sequence {yn - X'n}. are not necessarily convergent we still have: n+0 Yn and...
13 14
Exercise 13: Let (xn) be a bounded sequence a S be the set of limit points of (n), i.e. S:{xER there exists a subsequence () s.t. lim } ko0 Show lim inf inf S n-o0 Hint: See lecture for proof lim sup Exercise 14: (Caesaro revisited) Let (x) be a convergent sequence. Let (yn) be the sequence given by Yn= n for all n E N. Show that lim sup y lim sup n n-+00 n o0
Please help me solve 3,4,5
3- For all n € N, let an = 1. Let S = {an in€ N}. 3-1) Use the fact that lim - = 0 and the result of Exercise 1 to show that 0 ES'. Ron 3-2) Use the result of Exercise 2 to show that S = {0}. 4- Prove that 4-1) N' = 0. 4-2) Q =R. 5- Recall that a set KCR is said to be compact if every open cover...
4. (20 pts) Let {xn} be a Cauchy sequence. Show that a) (5 pts) {xn} is bounded. Hint: See Lecture 4 notes b) (5 pts) {Jxn} is a Cauchy sequence. Hint: Use the following inequality ||x| - |y|| < |x - y|, for all x, y E R. _ subsequence of {xn} and xn c) (5 pts) If {xnk} is a See Lecture 4 notes. as k - oo, then xn OO as n»oo. Hint: > d) (5 pts) If...
1. Let {n} be a sequence of non negative real numbers, and suppose that limnan = 0 and 11 + x2 + ... + In <oo. lim sup - n-00 Prove that the sequence x + x + ... + converges and determine its limit. Hint: Start by trying to determine lim supno Yn. What can you say about lim infn- Yn? 3 ) for all n Expanded Hint: First, show that given any e > 0 we have (...
Exercise 2.3.7: Let {xn} and {yn} be bounded sequences. a) Show that {Xn+yn} is bounded. b) Show that (lim inf xn) + (lim inf yn) < lim inf (Xn tyn). noo Hint: Find a subsequence {Xn; +yn;} of {Xn +yn} that converges. Then find a subsequence {Xnm;} of {Xn;} that converges. Then apply what you know about limits. n->00 c) Find an explicit {{n} and {yn} such that noo (lim inf xn) + (lim inf yn) <lim inf (Xn+yn). noo...
8 arbitrary set. K is Cousider E} n=1 nieU and Let (X, K) be a measure space where X is an sigma-algebra of subsets of X and is a measure sequenc o clemenis of K We delin lim supn(Fn) liminfn(En)- U then prove: (a) lim in(E)) lim inf(u(E,) (b) T J (c) If sum E,)x, then (lim sup(E)) = 0 x X) <oc lor somc nE N, then lim supn (Fn)> lim sup(u(F,n ))
8 arbitrary set. K is Cousider...
4. Consider the sequence {z,.) such that z1-0, z2-1 and æn-telths,Yn (i) Show that (n) is convergent by showing that the subsequence of odd-indexed terms is monotonic increasing and subsequence of even-indexed terms is monotonic decreasing (ii) Find the limit of {%) (Hint: Consider x,-h-i)
4. Consider the sequence {z,.) such that z1-0, z2-1 and æn-telths,Yn (i) Show that (n) is convergent by showing that the subsequence of odd-indexed terms is monotonic increasing and subsequence of even-indexed terms is monotonic...
Question 2. 25 marks] (Problem 38 in Section 13.4 of Royden and Fitzpatrick's book) Let (Y, ll-lly) be a normed vector space. Show that (Ý, IHIY) is Banach if and only if there exist a Banach space (X, l-1x) and an open operator T E (X,Y) Hint: You may use without proof the following two facts (which we used in our proof of Riesz-Fischer's Theorem for LP-spaces): There erists a subsequence (vn)nN such that lv +) - vpt)ly S 2-"...
real analysis
Find the limit of the sequence as n to or indicate that it does not converge en2 0 (0,0,1) O Does not converge 0 (0, 1, 7) 0 (0,0,0) Is it true that any unbounded sequence in RN cannot have a convergent subsequence? Please, read the possible answers carefully. 0 Yes, because any sequence in RN is a sequence of vectors, and convergence for vectors is not defined. o Yes, it is true: any unbounded sequence cannot have...
ANSWER 1 & 2 please. Show work for my understanding and
upvote. THANK YOU!!
Problem 1. Let {x,n} and {yn} be two sequences of real numbers such that xn < Yn for all n E N are both convergent, then lim,,-t00 Xn < lim2+0 Yn (a) (2 pts) Prove that if {xn} and {yn} Hint: Apply the conclusion of Prob 3 (a) from HW3 on the sequence {yn - X'n}. are not necessarily convergent we still have: n+0 Yn and...
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