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(2) Define the set A C 2 by s) n-0 (a) Prove that for any N 2 0 the set is compact. (b) Prove that for any є > 0 the...
(2) Define the set A by (a) Prove that for any N 20 the set is compact. (b) Prove that for any e>0 there exists some N 2 0 so that for any x A we have (c) Prove that A is totally bounded. d) Prove that A is compact.
the set A ⊆ L^2 by A = { {xn} ∈ L^ 2 : X∞ n=0 (1 + n)|xn| 2 ≤ 1 } Prove A is totally bounded, and compact.
(2) Define the set AC by A -{int el: n-0 (d) Prove that A is compact. (2) Define the set AC by A -{int el: n-0 (d) Prove that A is compact.
Problem 68. Define for any 2 n є N, the set U(n)-(x| 1 x n and gcd(z, n-1} For example U(12) 1,5,7,11 Further, define n to be multiplication modulo n. For example 9 10 90 (mod 8) 2. i. Show that o is a binary operation on U/). Hint: Use the lemma from Problem 3 on your take-home exam.) ii. Pick a є N. Prove that a: 1 (mod n) has a solution (some number z є U(n)) if and...
Im wondering how to do b). (6) We define the set of compactly supported sequences by qo = {(zn} : there exists some N > 0 so that Zn = 0 for all n >N). We define the set of compactly supported rational sequences by A={(za) E ao : zn E Q for all n E N). (a) Prove that A is countable (b) Prove that for 1 S p<oo the set A is dense in P. You may use...
Problem 2. Let C[0, 1] be the set of all continuous functions from [0, 1] to R. For any f, g є Cl0, 11 define - max f(x) - g(z) and di(f,g)-If(x) - g(x)d. a) Prove that for any n 2 1, one can find n points in C[O, 1 such that, in daup metric, the distance between any two points is equai to 1. b) Can one find 100 points in C[0, 1] such that, in di metric, the...
I do not need the two metrics to be proved (that they are a metric). Problem 2. Let C[0, 1] be the set of all continuous functions from [0, 1] to R. For any f, g є Cl0, 11 define - max f(x) - g(z) and di(f,g)-If(x) - g(x)d. a) Prove that for any n 2 1, one can find n points in C[O, 1 such that, in daup metric, the distance between any two points is equai to 1....
Problem 11.21. For k є Z, we define Ak-{x є Z : x-51+ k for some 1 є z} (a) Prove that {Ak : k Z} partitions Z. (b) We denote by ~ the equivalence relation on Z that is obtained from the par- tition of part (a). Give as simple a description ofas possible; that is, given condition "C(x,y)" on x and y s x~y if and only if "C(x, y)" holds. Problem 11.21. For k є Z, we...
Topology (a) For each subset A of NV0), define eA є loo such that the k-th component of eA is 1 if k є A and 0 otherwise. Define B-(Bde (eA; 1/2) : A N\ {0)). Recall I. (i) If AメB are subsets of N \ {0), find the value of doc (eA, eB). (ii) Show that B is a collection of disjoint open balls in 100. iii) By quoting relevant results, justify whether or not the collection B is...
2 (1) For z E C, define exp z - n-0 (a) Prove that the infinite series converges absolutely for z E C (b) Prove that when z є R, the definition of exp z given above is consistent with the one given in problem (2a), assignment 16. Definition from Problem (2a): L(x(1/t)dt E(z) = L-1 (z) 2 (1) For z E C, define exp z - n-0 (a) Prove that the infinite series converges absolutely for z E C...