Question

In: Advanced Math

Suppose that k is a field which is not algebraically closed. a. Show that if I...

Suppose that k is a field which is not algebraically closed. a. Show that if I ⊂ k[x1, . . . , xn ] is maximal, then V(I) is either empty or a point in kn . Hint: Examine the proof of Theorem 11. b. Show that there exists a maximal ideal I in k[x1, . . . , xn ] for which V(I) = ∅. Hint: See the previous exercise. c. Conclude that if k is not algebraically closed, there is always a maximal ideal of k[x1, . . . , xn ] which is not of the form <x1 − a1, . . . , xn − an >

Solutions

Expert Solution


Related Solutions

Suppose A and B are closed subsets of R. Show that A ∩ B and A...
Suppose A and B are closed subsets of R. Show that A ∩ B and A ∪ B are closed.
Show linear dependence or independence. Show all steps algebraically. a. let v1= < x1, x2, ......
Show linear dependence or independence. Show all steps algebraically. a. let v1= < x1, x2, ... , xn > and v2 = < y1, y2, ... , yn > be vectors in R^n with v1 not equal to 0. Prove that v1 and v2 are linearly dependent if and only if v1 is a non-zero multiple of v2. b. Suppose v1, v2, and v3, are linearly independent vectors in a vector space V. Show that w1, w2, w3, are linearly...
PLEASE SHOW ME HOW TO SOLVE THIS ALGEBRAICALLY. SPECIFICALLY SHOW HOW TO GET THE COUPON PAYMENT...
PLEASE SHOW ME HOW TO SOLVE THIS ALGEBRAICALLY. SPECIFICALLY SHOW HOW TO GET THE COUPON PAYMENT PLEASE. Smiley Industrial Goods has bonds on the market making annual payments, with 13 years to maturity, and selling for $1,095. At this price, the bonds yield 6.4 percent. What must the coupon rate be on these bonds?
2. (Monty Hall) Suppose you are on a game show and are presented with three closed...
2. (Monty Hall) Suppose you are on a game show and are presented with three closed doors marked door 1, 2, and 3. Behind one door is a prize and behind the other two are goats. Suppose the host allows you to select one door, but the following two rules apply: • Before it is opened the host opens one of the two unselected doors that has a goat behind it. • The host then allows you to switch your...
Suppose z' and K increase at the same time. Show that it is possible for the...
Suppose z' and K increase at the same time. Show that it is possible for the real interest rate to remain constant as a result. What does this say about the model's ability to explain the differences between poor and rich countries and to explain what happens as a country's economy grows?
Show algebraically that E(Var(β1hat)) = σ^2/(n-1)σx2
Show algebraically that E(Var(β1hat)) = σ^2/(n-1)σx2
Show algebraically the payoff of a butterfly spread using calls in the following cases: – ST...
Show algebraically the payoff of a butterfly spread using calls in the following cases: – ST < K1 – K1 < ST < K2 – K2 < ST < K3 – ST > K3 Assume K2 is the average of K1 and K3: K2 = .5*(K1 + K3) or 2K2 = K1 + K3 (i.e., the butterfly trade is symmetric). You can use this relationship to simplify the final expressions quite a bit.
Let K be a field. Observe that the polynomials in K[x] that are not zero and...
Let K be a field. Observe that the polynomials in K[x] that are not zero and not units are precisely the polynomials of positive degree.
solve the following LP. Formulate and algebraically solve the problem. Show all steps. what is the...
solve the following LP. Formulate and algebraically solve the problem. Show all steps. what is the new optimal z value max z=65x1+35x2+20x3 8x1+6x2+x3<=48 4x1+2x2+1.5x3<=20 2x1+1x2+0.5x3<=8 x2<=5 x1,x2,x3>=0 interpret the meaning of the shadow prices
Find a basis and the dimension of W. Show algebraically how you found your answer. a....
Find a basis and the dimension of W. Show algebraically how you found your answer. a. W = {(x1, x2, x3, x4) ∈ R^4 | x2 = x3 and x1 + x4 = 0} b. W = {( A ∈ M 3x3 (R) | A is an upper triangular matrix} c. W = { f ∈ P3 (R) | f(0) = 0.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT