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17 May 2024: On the average number of 2-Selmer elements of elliptic curves over F. ... Elliptic curves over Q. are modular. J. Eur. Math. Soc. 21 (2019), no.

5 May 2004: Finally, suppose that the average of f is significantly higher over A than it is over B. ... This probability increases with t, and the increase is very considerable when t is a couple of standard deviations higher than the average of f over B.

11 Jan 2024: 3. Let X be a Poisson random variable of parameter λ (0, ). (a) By optimizing the estimate of Question 2(b) over β, show that, for all x λ,. ... yet appeared? (b) What is the probability that the entire culture dies out eventually?

17 Mar 2022: Example 1: Elliptic Curves. F = {elliptic curves over Q}. Every E F has unique equation. ... Graded Lie algebras. DefinitionA Lie algebra h over a field k is m-graded if.

29 Jan 2002: It says that the dimension of Q(b) over Q equals the dimension of Q(a) over Q times the dimension of Q(b) over Q(a). ... But what is the dimension of Q(b) over Q(a)? It means the dimension of the vector space of all linear combinations of powers of b,

12 Oct 2023: Write down its negation insymbolic form. (Here m, n, a, b should be understood as ranging over all natural numbers.). ... m n a b (n m) [(a = 1) (b = 1) (ab 6= n)].

24 Nov 2023: 1. The square matrices A and B over the field F are congruent if B = PT AP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(.

25 Apr 2002: 2. =b? To answer that, we need to put it back in the original form, by multiplying out the bracket and taking b over to the left hand side. ... If we wish to carry this approach over to the cubic, then we should have clear answers to the following two

30 Oct 2023: 5. Let A and B be n n matrices over a field F. ... Which over R? 8. Find the eigenvalues and give bases for the eigenspaces of the following complex matrices: 1 1 00 3 20 1 0.

10 Oct 2023: Suppose that α has minimal polynomial f over Q, and let β = α4.Find a, b, c Q such that β = a bα cα2. ... The elements α andβ are then said to be algebraically dependent over K.].

30 Jun 2024: 2019). 148,. 103. (doi: 10.1090/proc/14749). Cut-off phenomenon for the axb Markov chain over a finite field. ... M Gross, B Siebert. (2019). Explicit moduli spaces for congruences of elliptic curves.

10 Jan 2017: PART II REPRESENTATION THEORYSHEET 4. Unless otherwise stated, all vector spaces are finite-dimensional over C. ...  : a,b,x Fp. of matrices over the finite field Fp (p prime).

1 Nov 2021: DIFFERENTIAL GEOMETRY (PART III) MICHAELMAS 2021. EXAMPLE SHEET 2. 1. Let T , U, and V be finite-dimensional vector spaces over a field K. ... Show that M M is trivial.(b) Show that for all n we have TSn R = Rn1 over Sn.

4 Dec 2019: vector bundles over B, and that Ui is a. ... 9. Construct a 3-dimensional real vector bundle over S4 which has no nonvanishing section.

23 Oct 2023: Prof. Dr. B. Löwe. Example Sheet #2. (14) Work over the alphabet Σ = {0, 1} and for n 1 consider. ... 16) Let L and M be languages over an alphabet Σ and consider the set equation X = LX M.

21 Nov 2018: form over R is equivalent to a direct sum of copies of the form(. ... b) Prove that if E and F are oriented vector bundles over a space X, their Euler classessatisfy eEF = eE eF.

11 Nov 2018: bundle of realrank one) over the circle, and prove that bundle is non-trivial. ... 7. Let p : E B be a fibre bundle over a path-connected space B with fibre F = p1(b).Suppose that H(F) is finitely generated and free, and that

27 Feb 2015: Nj=1 ‖γ(tj) γ(tj1)‖ where the sup is taken over all. finite partitions 0 = t0 < t1 <. < tN = 1. (i) Give an example for which (γ) =. If γ is continuously ... b) = inf (γ), wherethe inf is taken over all continuous γ: [0, 1] E with γ(0) = a,

29 Jan 2010: More generally, for any compact open subgroup K of Gf , there is a modular curve MK defined over Qwith. ... Thus over Z[1/q], uq is nonvanishing, and so in particular uq O(Y0(q)Q) O.

20 Apr 2021: 3.1 Homotopy, homology and cohomology. 6. 3.2 Comparison over C. 7. ... The étale homotopy type of Spec k is "-isomorphicto the pro-object {B(Gal(K/k))} where K/k runs over the system of all finite Galois extensions K/k.

28 Jan 2024: We fix T B Ga maximal torus and Borel pair in G defined over F which are in good positionrelative to s, and let I = Gal(F/F). ... We let B Tbe the Borel subgroup defined over F determined by BH and let X(T).

29 Jan 2010: The vectors {ug | g G} span Sp over k, since φ is a generator forIndGB δ. ... We work in the category MQ Q of Chow motives over Qwith coefficients in Q.

9 Dec 2005: A matrix A is said to be partition regular (PR) over a subset S of the positive integers if whenever S is finitely coloured, there exists a vector x, with all ... Those matrices which are partition regular over the positive integers were completely

19 Dec 2014: A filter F over κ is normal if for every {Xα F : α < κ}, the diagonal. ... ii) Prove Ulam’s theorem: there is no κ+ -saturated κ+ -complete ideal over κ+.

29 Jan 2010: groups:. Conjecture B. Let E be a motive over Z. Then. ... d′i = d. ′. By the above,. each B′i is a motive over Z, so is a submotive of the universal extension B†i.

9 Nov 2020: lemma. Since the slope filtration descend to G u(a,b), for a a′ b′ b we have a subquotient over. ... Def (a,b) over s, and Defs(a,b1) to be the fiber of Defa,b1 Def (a,b) over s.

13 Dec 2017: 15. Suppose B is compact, and that E is a vector bundle over B I. ... Show that fi (E) ' fi1(E). Deduce that if E′ is a vector bundle over B′ and f,g : B B′ are homotopic, thenf(E′) ' g(E′).

16 Jul 2014: Mark Gross Mirror symmetry and the SYZ conjecture. In this case, the SYZ fibration over B has a singular fibre over thesingular point of B, a pinched torus, and the total ... space of thefibration over B has two holomorphic disks, one as depicted:.

6 Mar 2023: of punctured curves and pre-stable or stable punctured log maps f : C/W X orf : C/W X defined over B. ... stacks. We remind the reader that allproducts in this square are taken over B.

25 Aug 2021: It is a reductivegroup over F such that. Jb(R) = {g G(F̆ F R) | g1bσ(g) = b}. ... In this case XK̆,w(b) is locally offinite type over k (cf.

18 Feb 2015: H = B is the multiplicative group of a quaternion division algebra B over F (sothat Y is compact). ... over R or C).• (Log-)syntomic cohomology Hisyn(,sQp(j)) (for varieties over a p-adic.

11 Nov 2020: The key idea is to use theLang–Weil estimate to relate the cardinality of JΣtop to the asymptotic behaviorof the number of points on Xµ(b) over a finite field, as ... Define the group scheme Jb over F by. Jb(R) ={g G(RF L) | g1bσ(g) = b.

29 Jan 2010: E! X, and D is the divisor over which fails to be smooth. ... X is dened over K. This determines direct and inverse image maps: Wk̀!

13 Nov 2012: 6. Let π : E B be a fibration over a path connected base B. ... Hint: quaternions.). 8. Prove that S is contractible. 9. Suppose that L1 and L2 are complex line bundles over B which are both locally trivialwith respect to an open cover {Uα}

27 Oct 2014: 0 3 1. . 3. Let A and B be nn matrices over a field F. ... Show that A can bediagonalised. 11. Let C be an nn matrix over C, and write C = A iB, where A and B are real nn matrices.

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).

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.

11 Nov 2019: The ψβα’s can be taken from some vector bundle E over B, then P will be‘constructed from E’. ... The construction can be reversed, so as to start from a principalG-bundle P over a base manifold B and obtain the vector bundle E over B.

21 Apr 2013: A) g : X X′ is étale over Y ′(B) Γ(X,OX) = K is a field. ... ar,. where sum ranges over complete set of representatives of congruence classes modulop in Q(ζm).

20 Nov 2015: 1. The square matrices A and B over the field F are congruent if B = PTAP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(.

14 Oct 2016: If not, then get on with the questions below and don’t turn over. ... 0a) Write down a definition of multiplication for natural numbers. Prove that multipli-cation is distributive over addition: that is, for all natural numbers a, b and c we havea(b

12 Sep 2002: The size of A A is 20, which is over. three times larger than the size of A. ... B B = {2, 3, 4, 5, 6, 7, 8, 10, 12} ,. which has size 9 and is therefore only just over twice the size of B.

4 Dec 2014: 1. The square matrices A and B over the field F are congruent if B = PTAP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(.

29 Sep 2023: elliptic curves over Q in 2001 by Breuil, Conrad,Diamond, and Taylor [8]. ... 2] P. B. Allen, C. Khare, J. A. Thorne, Modularity of GL2(Fp)-representations over CMfields, arXiv:1910.12986.

19 Dec 2014: ZFC. (a) G is generic in P over M ;(b) GD 6= for every dense open set D P in M ;(c) GC 6= for every dense subset C P in ... The intended interpretationof the second-order variables ranges over arbitrary subsets of the domain.

23 Jan 2019: F ; Z)/tors over B.Then. ... ξπ := (Hd/2(F; R) Hd/2(F; R)) C K0(B).In both cases these virtual vector bundles are defined over BO(H,λ), giving a.

20 Oct 2004: in symbolic form. (For this question the letters m, n, a, b should be understood as ranging. ... over all positive integers - for instance, m really means m N.).

21 Nov 2016: 1. The square matrices A and B over the field F are congruent if B = PTAP for some invertible matrixP over F. ... Which, if any, over Q?) Try to get away with the minimum calculation.(.

8 Oct 2021: We fix a totally indefinite quaternion algebra B over F which is split at all the places above p.Let S Σ Σp be a subset of even cardinality. ... We write BS for the quaternion algebra over F whose ramification set is precisely the union of Sand the

3 Dec 2014: If H(M) is free over Z, we can choose a basis ofH2n(M) and write (a,b) = aTAb for some symmetric matrix A with entries in Z. ... 14. Construct a 3 dimensional real vector bundle over S4 which does not have a nonvanishingsection.