Search

30 Aug 2019: Starting from the Ricci identity. Xa;dc Xa;cd = R abcd Xb ,. show that for a Killing vectorξa;b. ;b Rab ξb = 0. ... JS = 116π. Sξa;b d2 Σab , (). where Σab is the proper area element on S.

30 Aug 2019: Suppose that B is a closed unital subalgebra of A, and that b B. ... Suppose that a, b and b2 a2 are positive. Show that b a is positive.

30 Aug 2019: ut. (u )u = 1ρr. p ρρr. g 1ρr. ( B) B ν2u,. ... ψ(x,z,τ) =pλ. πsin. πx. λsin πz a(τ),. Θ(x,z,τ) = cosπx. λsin πz b(τ),.

17 Jun 2019: 5]. [Note that a b a b. ]. (b) Write down the equation for a sphere S given that its centre is at position vector aand its radius is p > 0. ... 2(b a) r = p2 q2 b2 a2 ,where a = |a| and b = |b|.

30 Aug 2019: For the particular choice. ψ(x) = min{b, max{x,b}}, b < :. (i) Find the asymptotic variance V (ψ, Φ), where Φ is the standard normal distri-bution;. ... ii) Verify that the estimator is B-robust, by determining an explicit bound on theinfluence

17 Jun 2019: 5]. 5B (a) Let A and B be n n Hermitian matrices (A = A†, B = B† ) with distincteigenvalues. ... 5]. (b) If C is a unitary matrix and A is Hermitian show that(C1AC.

17 Jun 2019: Let A and B be 33 matrices representing linear mappings α and β. ... 6. 11A Vector Calculus. Prove that. (a b) = a b b a (b )a (a )b.

4 Aug 2022: b) By considering the dual 1-forms, show that on U we have. ... Let A be a connection on a principal G-bundle π : P B.(b) Define the horizontal distribution H and curvature F of A, and show that H is.

30 Aug 2019: 3 Let Ta,b denote the first hitting time of the line a bs by a standard Brownianmotion, where a > 0 and < b < and let Ta = Ta,0 represent the first ... 2θ or otherwise, derive an expression. for E(eθTa,b. )for each b, < b <. Hence, or otherwise, show

21 Aug 2019: Suppose that A and B arenn Hermitian matrices such that U = A iB. ... Hence, or otherwise, expand. (i) (a b) (c d) ,. (ii) (a b) [(b c) (c a)].

30 Aug 2019: n(h)dh = B exp(bh)dh ,. where B, b are parameters which can be expressed in terms of the mean draft hm, thecutoff h0, and the total number of ridges ... On the assumption that ridged ice is composed ofpressure ridges of congruent triangular shape, with

30 Aug 2019: b) Let X be a random variable such that EX2 < and E(X | G. ... n0. b) Let(Xn. )n0 be a positive supermartingale. For fixed a, b, b > a > 0, we put N0 = 1.

30 Aug 2019: b) there exists a positive random variable ν, P (ν > 0) = 1, with E ‖νA1‖ < suchthat A0 = E (νA1). ... 2θ, or otherwise, derive an. expression for E(eθTa,b. )for each b, < b <. Hence, or otherwise, show that, for t > 0,. P (Ta,b 6 t) = e2abΦ(.

17 Jun 2019: Use suffix notation to expand (a b) (b c).Let a, b, c be given unit vectors in R3, and let m = (a b) (b c) (c a). ... Show that f is continuous at x0. (b) State the Mean Value Theorem.

30 Aug 2019: b) Define the coaction of SLq(2) on kq[x, y] and compute explicitly 4x2y. ... Define (by stating its universal property) what is meant by the universal measuringcoalgebra P (A, B).

30 Aug 2019: State two furtherconditions satisfied by v and B. Show that there exist plane-wave solutions of the form. ... B = Re{B̃(t) exp [ik(t)x]. },. and obtain equations governing the evolution of ṽ, B̃ and k.

17 Jun 2019: Each section B question has a number and a letter (for example, 11S). ... x = a (b x)b b x. Show that. x b =a b.

19 Jun 2019: 5 Statistical Genetics. Consider a genetic locus with two alleles, a and b. ... i) Under Hardy-Weinberg equilibrium, what are the expected frequencies ofindividuals with genotypes a/a, a/b and b/b respectively, in terms of p?

30 Aug 2019: Katona Theorem and one using cyclic orderings. Let A, B [n](r), where r 6 n/2. ... Show that if |A|, |B| >(n1r1. ). then there exist. A A and B B with A B =. Part III, Paper 12. 3. 3. State and prove the vertex-isoperimetric inequality in

30 Aug 2019: f1ḟ = Tr(F 1Ḟ ). (c) If A, B B(H) with [A, B] trace–class, prove that eAeBeAeB lies in G(H)with. ... Whena = d = 0, b = 1 and c = 1, find a corresponding operator V.