- #1
simpleton1
- 14
- 0
Hi,
Could someone post a solution to the following questions :
1. Let R be the real numbers and A a collection of all groups that are either bound or their complement is bound.
a. Show that A is an Algebra. Is it a sigma algebra?
b. Define measure m by m(B) = {0 , max(on B) x < $\infty$ and 1 , max(not on B) x < $\infty$
Show that m on B is finite sigma additive but not sigma addivite.
2. Show there's a single continuous function from [0,1] to R that makes the equation below for all $0 \le x\le 1$:
f(x) = sinx+$\int_{0}^{1} \frac{f(y)}{exp(x+y+1)} \,dy$
3. Show that in {C}^{n} with the eucledian norm ($ {\left\lVert{X}\right\rVert}^{2} = \sum_{i=1}^{n}{\left| Xi \right|}^{2} $) weak convergion causes strong convergion. Is that true in every Hilbert space?
4. Let B = {${(Xn) \in l2 : {sup}_{n}\left| Xn \right|\le1}$}. Is B a compact sub-group of l2?
5. a. Let A(f) = $\int_{0}^{1}tf(t) \,dt $ . Is A a continuous linear functional in L2[0,1] space?
b. Let A(f) = $\int_{0}^{1}f(t)\frac{2}{t-1} \,dt $ . Is A a continuous linear functional in L2[0,1] space?
No need to prove linearity of A and B.
Could someone post a solution to the following questions :
1. Let R be the real numbers and A a collection of all groups that are either bound or their complement is bound.
a. Show that A is an Algebra. Is it a sigma algebra?
b. Define measure m by m(B) = {0 , max(on B) x < $\infty$ and 1 , max(not on B) x < $\infty$
Show that m on B is finite sigma additive but not sigma addivite.
2. Show there's a single continuous function from [0,1] to R that makes the equation below for all $0 \le x\le 1$:
f(x) = sinx+$\int_{0}^{1} \frac{f(y)}{exp(x+y+1)} \,dy$
3. Show that in {C}^{n} with the eucledian norm ($ {\left\lVert{X}\right\rVert}^{2} = \sum_{i=1}^{n}{\left| Xi \right|}^{2} $) weak convergion causes strong convergion. Is that true in every Hilbert space?
4. Let B = {${(Xn) \in l2 : {sup}_{n}\left| Xn \right|\le1}$}. Is B a compact sub-group of l2?
5. a. Let A(f) = $\int_{0}^{1}tf(t) \,dt $ . Is A a continuous linear functional in L2[0,1] space?
b. Let A(f) = $\int_{0}^{1}f(t)\frac{2}{t-1} \,dt $ . Is A a continuous linear functional in L2[0,1] space?
No need to prove linearity of A and B.