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2. Let p(x), q(x) denote the following open statements: p(x) 9(г) : x 1 is odd...
2. (10) Let p be an odd prime. Let f(x) E Q(x) be an irreducible polynomial of degree p whose Galois group is the dihed...
2. (10) Let p be an odd prime. Let f(x) E Q(x) be an irreducible polynomial of degree p whose Galois group is the dihedral group D2p of a regular p-gon. Prove that f(x) has either all real roots precisely one real root or
2. (10) Let p be an odd prime. Let f(x) E Q(x) be an irreducible polynomial of degree p whose Galois group is the dihedral group D2p of a regular p-gon. Prove that f(x) has either...
3. (a) Let p(x) be "r has passed Math 122." Suppose the universe of r is...
3. (a) Let p(x) be "r has passed Math 122." Suppose the universe of r is the set of all students. Write Vir, ((:r #Gary) → p(x)) A-p(Gary) in plain English. Do not literally translate the symbols into words. (b) Suppose p(n) and g(n) are statements involving the integer n. Explain why In,p(n)Agin) is not logically equivalent to En, pin) A En,q(n)). (Hint: check it out with pin): "n is even" and qn): "n is odd.") (c) Suppose a(n) and...
QUESTION 2 a. Let p and q be the statements. i Construct the truth table for...
QUESTION 2 a. Let p and q be the statements. i Construct the truth table for (-p V q) ^ q and (-p) v q. What do you notice about the truth tables? Based on this result, a creative student concludes that you can always interchange V and A without changing the truth table. Is the student, right? ii. Construct the truth tables for (-p VG) A p and (-p) v p. What do you think of the rule formulated...
Let P(x) denote “x + 2 ≥ 5 ”, find the truth values for the following...
Let P(x) denote “x + 2 ≥ 5 ”, find the truth values for the following compound propositions: a. P(1) ∨ P(-2) b. P(4) ∧ P(3) c. P(2) ∨ p(x)
2. Let Q(x,y) be the statement "x - 2 = 5y" and let the domain for...
2. Let Q(x,y) be the statement "x - 2 = 5y" and let the domain for x and y be all integers. Determine the truth value of each of the following statements. Justify your answers shortly. (i) Q(-3,-1) (ii) Vx3yQ(x,y) (iii) 3xVy-Q(x,y)
Homework 19. Due April 5. Consider the polynomial p(z) = r3 + 21+1. Let F denote the field Q modu...
Homework 19. Due April 5. Consider the polynomial p(z) = r3 + 21+1. Let F denote the field Q modulo p(x) and Fs denote the field Zs[r] modulo p(x). (i) Prove that p(x) is irreducible over Q and also irreducible over Zs, so that in fact, F and Fs are fields (ii) Calculate 1+2r2-2r + in HF. (iii) Find the multiplicative inverse of 1 +2r2 in F. (iv) Repeat (ii) and (iii) for Fs. (v) How many elements are in...
9. Let x,y > 0 be real numbers and q, r E Q. Prove the following:...
9. Let x,y > 0 be real numbers and q, r E Q. Prove the following: (а) 29 > 0. 2"а" and (29)" (b) x7+r (с) г а — 1/29. 0, then x> y if and only if r4 > y (d) If q (e) For 1, r4 > x" if and only if q > r. For x < 1, x4 > x* if and only if q < r.
5. (10 points) Let p="x < y", q="x < 1", and r="y > 0". Using ~,...
5. (10 points) Let p="x < y", q="x < 1", and r="y > 0". Using ~, 1, V write the following statements in terms of the symbols p, q, and r. (a) 0 <y < x < 1. (b) 1 < x <y<0.
1. Given: p: x > 4; q: x <= -2. Translate the following into Boolean Expressions...
1. Given: p: x > 4; q: x <= -2. Translate the following into Boolean Expressions and simplify if possible. a. q b. ^p c. p^q d. *p v *q e, p>q For the compound expressions: c, d, and e, identify the ones that portray an impossible situation (i.e., simplify to Ø) and explain why.
10. Let p(x) +1. Let E be the splitting field for p(x) over Q. a. Find the resolvent cubic R(z). ...
Part D,E,F,G
10. Let p(x) +1. Let E be the splitting field for p(x) over Q. a. Find the resolvent cubic R(z). b. Prove that R(x) is irreducible over Q. c. Prove that (E:Q) 12 or 24. d. Prove: Gal(E/Q) A4 or S4 e. If p(x) (2+ az+ b)(a2 + cr + d), verify the calculations on page 100 which show that a2 is a root of the cubic polynomial r(x)3-4. 1. f. Prove: r(x) -4z 1 is irreducible in...
2. (10) Let p be an odd prime. Let f(x) E Q(x) be an irreducible polynomial of degree p whose Galois group is the dihedral group D2p of a regular p-gon. Prove that f(x) has either all real roots precisely one real root or
2. (10) Let p be an odd prime. Let f(x) E Q(x) be an irreducible polynomial of degree p whose Galois group is the dihedral group D2p of a regular p-gon. Prove that f(x) has either...
3. (a) Let p(x) be "r has passed Math 122." Suppose the universe of r is the set of all students. Write Vir, ((:r #Gary) → p(x)) A-p(Gary) in plain English. Do not literally translate the symbols into words. (b) Suppose p(n) and g(n) are statements involving the integer n. Explain why In,p(n)Agin) is not logically equivalent to En, pin) A En,q(n)). (Hint: check it out with pin): "n is even" and qn): "n is odd.") (c) Suppose a(n) and...
QUESTION 2 a. Let p and q be the statements. i Construct the truth table for (-p V q) ^ q and (-p) v q. What do you notice about the truth tables? Based on this result, a creative student concludes that you can always interchange V and A without changing the truth table. Is the student, right? ii. Construct the truth tables for (-p VG) A p and (-p) v p. What do you think of the rule formulated...
2. Let Q(x,y) be the statement "x - 2 = 5y" and let the domain for x and y be all integers. Determine the truth value of each of the following statements. Justify your answers shortly. (i) Q(-3,-1) (ii) Vx3yQ(x,y) (iii) 3xVy-Q(x,y)
Homework 19. Due April 5. Consider the polynomial p(z) = r3 + 21+1. Let F denote the field Q modulo p(x) and Fs denote the field Zs[r] modulo p(x). (i) Prove that p(x) is irreducible over Q and also irreducible over Zs, so that in fact, F and Fs are fields (ii) Calculate 1+2r2-2r + in HF. (iii) Find the multiplicative inverse of 1 +2r2 in F. (iv) Repeat (ii) and (iii) for Fs. (v) How many elements are in...
9. Let x,y > 0 be real numbers and q, r E Q. Prove the following: (а) 29 > 0. 2"а" and (29)" (b) x7+r (с) г а — 1/29. 0, then x> y if and only if r4 > y (d) If q (e) For 1, r4 > x" if and only if q > r. For x < 1, x4 > x* if and only if q < r.
5. (10 points) Let p="x < y", q="x < 1", and r="y > 0". Using ~, 1, V write the following statements in terms of the symbols p, q, and r. (a) 0 <y < x < 1. (b) 1 < x <y<0.
1. Given: p: x > 4; q: x <= -2. Translate the following into Boolean Expressions and simplify if possible. a. q b. ^p c. p^q d. *p v *q e, p>q For the compound expressions: c, d, and e, identify the ones that portray an impossible situation (i.e., simplify to Ø) and explain why.
Part D,E,F,G
10. Let p(x) +1. Let E be the splitting field for p(x) over Q. a. Find the resolvent cubic R(z). b. Prove that R(x) is irreducible over Q. c. Prove that (E:Q) 12 or 24. d. Prove: Gal(E/Q) A4 or S4 e. If p(x) (2+ az+ b)(a2 + cr + d), verify the calculations on page 100 which show that a2 is a root of the cubic polynomial r(x)3-4. 1. f. Prove: r(x) -4z 1 is irreducible in...
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