Search

12 Mar 2008: If g is another such function then f(z) = g(z) exp h(z)for some entire function h. ... If g were another such function then g/f would be an entire function with no zeros and thereforeequal to exp h for some entire function h.

30 Nov 2008: Find the Taylor series of g(I H) about I. 9. Let f : R2 R and (a, b) R2.(a) Suppose that D1f exists and is continuous in some open ball ... around (a, b), and that D2f exists at (a, b).Show that f is differentiable at (a, b).(b) Suppose instead that D1f

12 Aug 2008: vary in difficulty but cover some instructive points. 1. For what values of a and b does the system of simultaneous linear equations. ... What are the eigenvalues and eigenvectors?Show that if an endomorphism β of V commutes with α then β = p(α) for

27 Feb 2008: C = {M M(A) : ResAB(M) P(B)}.Since any P P(A) is a direct summand of An for some n > 0, the restrictionResAB(P) is a finitely generated projective ... It follows thatwe can find P,Q P(H) such that [P] [Q] = m[1] inside G0(H) for some m > 0depending only

5 Nov 2008: 1) History. [If you decide to include some history, keep it down to acouple of sentences. ... This is a mathematics exam.]. (2) Preliminary definitions. [You may decide to give some illustrativeexamples.].

2 Feb 2008: A′,B′) = (m11A N m12B N,m21A N m22B N). for some (M,N) G4(K) := GL2(K) GL4(K). ... Q = ξ2for some ξ F and F[x1,x2,x3,x4] a linear form.

14 Oct 2008: Show thatf(x) = x for some x S1. 3. Which of the letters A,B,. ... 1,1) π1(S1,f(1)) when. (a) f(eiθ) = ei(θπ/2). (b) f(eiθ) = einθ for some n Z.

19 Mar 2008: only if U = Y V for some V open in (X, dX ).(ii Show that A is closed in (Y, dY ) if and only if A = Y B for some B ... a contraction? Deduce that the differential equation. dy. dx= 2xy , with y = 1 when x = 0 ,. has a unique solution in some interval

4 Feb 2008: Show that f and g have the same splitting field if andonly if b = cmar for some c K and r N with gcd(r, m) = 1. ... Deduce that every finite abelian group is the Galois group of some Galois extensionK/Q.

8 Mar 2008: In some sense a topological group is an object were the the statement‘the neighbourhood of every point looks the same’ is (a) meaningful and (b)true. ... Theorem B. (Bochner’s theorem.) A continuous function f : G C ispositive definite if and only

23 Feb 2008: fundamental group of some space. (5) Let L be the “infinite ladder of circles” given by the subset ofR2 consisting of the union of the circle of radius 1/2 aroundeach ... in C which maps to 0 in C′. (1) Show that x maps to 0 in Dand hence that x is

27 Aug 2008: L3;! A B! A (!R)! AFig. 1. (Multiplicative) Intuitionistic Linear Logicpackets, using some predened set of inference rules. ... Some thought that this represented a mismatch betweenthe semantics and syntax of linear logic.

17 Oct 2008: Show that if fn f uniformly and (xm) isa sequence of points in [a, b] with xm x then fn(xn) f (x). ... Prove that there is some subinterval [a, b] of [0, 1] with a < b on which f is bounded.

4 Feb 2008: 6) Let f : B B be a continuous map from the open disc B = {(x, y) R2 : x2 y2 < 1} into it-self. ... 10) Suppose f : R R has the intermediate value property that if a, b R, f (a) < c < f (b),then f (y) = c for some y between a and b.

3 Nov 2008: 3. Let a,b,c be three positive integers. Are the following true or false? ... b) Now let F = Zp be the field of integers mod p, for some prime p, and suppose d dividesp 1.

21 Nov 2008: f(z) =a(z z0) bc(z z0) d. ,. for some a,b,c,d,z0 C. ... N. m,n=0. am,nf(z)mg(z)n 0, for some am,n C. Hence show that any two meromorphic functions f,g on a complextorus C/Λ are

17 Nov 2008: δ is abelian.(c) Assume that δ(g) = 1 for some g G. ... irreducible. 3 Given any prime p. Find an example of a representation of some finite group oversome field of characteristic p, which is not completely reducible.

14 Oct 2008: Hence x1 = x2 = = xk1, so theresult is true for n = k 1.(b) Clearly, some positive integers are interesting: for example, 6 is the smallest perfectnumber, 1729 is the smallest number ... Suppose some positive integers were not interesting: then, by the

28 Nov 2008: 1. The square matrices A and B over the field F are congruent if B = P T AP for some invertible matrixP over F. ... λn.(i) Show that if Sk = I for some k 1 then S2 = I.(ii) Find the eigenvalues of the endomorphism of Matn(R) given by X 7 SXT S.

27 Aug 2008: L3;! A B! A (!R)! AFig. 1. (Multiplicative) Intuitionistic Linear Logicpackets, using some predened set of inference rules. ... Some thought that this represented a mismatch betweenthe semantics and syntax of linear logic.