Search

13 Dec 2009: Conclude thatπn1(SO(n)) is infinite for even n. 6. If V1 and V2 are two vector bundles over B, then V1 V2 is a bundle over B B. ... 1. PART B. 1. Show that real 1-dimensional vector bundles over B are in 1-1 correspondence withelements of H1(B; Z/2).

18 Oct 2009: 8. Find the minimal polynomials over Q of the complex numbers 53, i+. ... Deduce that the only elements of K(X) which are algebraic over K areconstants.

5 Nov 2009: b) If X = T 2, describe Ccell (X̃) as a complex over the group ring Z[Z2] ' Z[t1, s1].(c) Suppose that X̃ is contractible, and that π : X′ X ... homomorphism. Explain how φ can be used to make H into amodule over R.

8 Oct 2009: PART II REPRESENTATION THEORYSHEET 4. Unless otherwise stated, all vector spaces are finite-dimensional over C. ...  : a,b,x Fp. of 3 3 upper unitriangular matrices over the finite field Fp of p elements (p prime).Show that G has p

14 Feb 2009: Show that thedual (over Q) of C is C+. (b) Show that H(C) is a direct sum of copies of Q[U ] and Q[U ]/(U ni ). (Use thestructure theorem ... d) Explain how this is formally similar to the homology of the Hopf bundle over CPn.

30 Oct 2009: 5. Let A and B be n n matrices over a field F. ... 13. Let C be an n n matrix over C, and write C = A iB, where A and B are real n n matrices.

9 Oct 2009: In whichof these cases is U a vector space over R?(a) x1 > 0.(b) either x1 = 0 or x2 = 0.(c) x1 x2 = 0.(d) x1 x2 = 1.(e) x1 ... 2. Determine which of the following sets of sequences of real numbers (xn) form vector spaces over R.(a) xn is bounded.(b) xn

19 Feb 2009: a) When the culture has been going for just over n minutes, what is the probabilitythat no white cells have yet appeared? ... b) What is the probability that the entire culture eventually dies out?

27 Nov 2009: 1. The square matrices A and B over the field F are congruent if B = P T AP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(.

13 Nov 2009: 13. Let V be a vector space of finite dimension over a field F. ... Verify that (DS) = SD and (SD) = DS. 16. For A an n m and B an m n matrix over the field F , let τA(B) denote trAB.Show that, for