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24 Nov 2021: You may assume that A and B can be triangulated so that A B is asubcomplex of both A and B. ... Show that the linear map A : R2 R2preserves the equivalence relation (a,b) (a′,b′) (aa′,bb′) Z2, andso induces a continuous map fA : T.

15 Oct 2021: x B B B1 B2. b) Conversely, suppose that one is given a set S and a collection β of subsets ofS satisfying i), ii) above. ... β = {I1 In : Ik βQ}. For any B β we have B ={B′ β : B′ B} since, for example.

15 Oct 2021: intervals in R.iii) A = {(a,b]|a,b R,a < b}.iv) A = {[a,b)|a,b R,a < b}.v) A = {(,b)|b R}.vi) A = {(,b]|b ... We note that the Lebesgue measure is translation invariant: µ(B x) = µ(B) forany x Rn, B B(Rn).

15 Oct 2021: c) If A and B are both bounded, then so is A B. ... e) If A and B are both compact, then so is A B.

6 Aug 2021: c) If A and B are both bounded, then so is A B. ... e) If A and B are both compact, then so is A B.

8 Oct 2021: From Riesz representation Theorem, there exists T(x′) Hsuch that. 〈x′,T(x)〉B′B = (x | T(x′))H for all x H. ... AB be a converging sequence, then zn = anbn z and by compactness ofA: aφ(n) a implies bφ(n) za b B since B is closed, and hence z

15 Oct 2021: b) Suppose φ E (Rn), show that. hi φ Diφ, as h 0,. ... c) If A and B are both bounded, then so is A B.

15 Oct 2021: Maxwell’s equations in a vacuum have the form:. E = 0, (1)B. ... Then each component of E,B satisfies the wave equation:. 2Eit2. c2Ei = 0.

15 Oct 2021: a) f : R Rx 7 ex. b) f : (0, 1) Rx 7 ex. ... We make the obvious definition of a Cauchy sequence in C0([a,b]).