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11 Mar 2024: f(B) then y = f(a) for some a A andy = f(b) for some b B but then f(a) = y = f(b) so a = b A Band y ... If y f(A) f(B) then y = f(a) for some a A and y = f(b) for someb B.

19 Jan 2021: a) Show that there is a surjection π1Sg G, for some g.(b) Show that G is a subgroup of Mod(Sh), for some h. ... a) Prove that TαTβ(α) = β. (b) Prove the braid relation: TαTβTα = TβTαTβ.

21 Apr 2013: 4. We can get round this in the usual way(cf. part (b) proof of [11, 5.2]): take X = X′ = X(3) for some auxiliary integerN 3, and define ... If p 1 mod 3, then for some αp Zp (ordp(αp) = 2).

15 Oct 2009: k=1 uk(x0) converges at some point x0 [a, b] and. (ii) the series of derivatives. ... Then for x [a, b] we can write g(x) g(x0) = g′(ξ)(x x0) with some ξ [x0, x] [a, b] (or ξ [x, x0] [a, b]), using the

8 Aug 2021: Replace‘Similarly, we can can take a = sin φ, b = cos φ for some real φ.’ by. ... Similarly, we can can take c = sin φ, d = cos φ for some real φ.’.

29 Jan 2010: Show that f (x) = 0 for allx. 8. Let f : [a, b] R be bounded. ... 13. Let f : R R be a function which has the intermediate value property: If f (a) < c < f (b),then f (x) = c for some x between a and b.

19 Jan 2022: Prove that f is continuous on (a,b). Must it be continuous at a andb too? ... 13. Let f : R R be a function which has the intermediate value property: Iff(a) < c < f(b), then f(x) = c for some x between a and b.

19 Dec 2003: k}. Show that equality holds for some. fixed r if and only if B(p,r) is isometric to the ball of radius r in the constant curvature space formof curvature ... limr. V (p,r)wnrn. = 1. for some p M, must be isometric to the Euclidean space.

22 Nov 2022: 11. Let K be a field containing a primitive mth root of unity for some m > 1. ... Show that f and g have the same splittingfield if and only if b = cmar for some c K and r N with gcd(r,m) = 1.

6 Oct 2019: Why cohomology? A moduli space M is anything which classifies some kind of families:. ... It always depends on the specifics of the groups Gn, though thereare some general principles.

11 Jan 2024: Could there be some other Euclidean function φ making Z[3] into a Euclidean domain? ... iii) Show that if R is a PID, the gcd of elements a and b exists and can be written as rasbfor some r,s R.

6 Feb 2021: Prove that f is continuous on (a,b). Must it be continuous at a andb too? ... 13. Let f : R R be a function which has the intermediate value property: Iff(a) < c < f(b), then f(x) = c for some x between a and b.

9 Nov 2020: Some of the results in our paper have been obtained by Hong in [10] for the two-slope case usinga different method. ... Therefore. b = m1υ(p)m2 = υ(p)h. for some h M(OL). By Lang’s theorem for M, there exists m′ M(OL) such that m′σ(m′)1 =

6 Feb 2012: Show that f (x) = 0 for allx. 8. Let f : [a, b] R be bounded. ... 13. Let f : R R be a function which has the intermediate value property: If f (a) < c < f (b),then f (x) = c for some x between a and b.

3 Feb 2011: Show that f (x) = 0 for allx. 8. Let f : [a, b] R be bounded. ... 13. Let f : R R be a function which has the intermediate value property: If f (a) < c < f (b),then f (x) = c for some x between a and b.

15 Oct 2021: for some b > 0, and invoke. the contraction mapping principle]. ...  CbT(1 T) ||w v||X. for some constant C depending on b but not T.

24 Nov 2003: Deducethat there exists a pair of irrational numbers a, b such that ab is rational. ... c there is some x with a < x < b and f(x) = c.

19 Dec 2014: Note that g M and P(P 2) hascardinality β for some β < κ (by strong inaccessibility). ... Say that A and B arepartially isomorphic, denoted A 'p B if some non-empty family F Part(A, B) of thepartial isomorphisms from A to B is a

17 Feb 2010: ii) For some K, some ω V Kπ , and some u, v O(MK) Z Q,MK (C). ... For some positive integer N, the correspondence NXp(Tp) annihilatesPic0(MK), and since p 1 > 2.

23 Mar 2009: a = qb r. for some q, r R with r = 0 or d(r) < d(b).For example. ... N by. N(a b. 2. )= a2 2b2. (=. a b22) (a, b Z).

25 Nov 2005: Show that f and g havethe same splitting field if and only if b = cmar for some c K and r N with gcd(r, m) = 1. ... Deduce that every finite abelian groupis the Galois group of some Galois extension K/Q.

19 Jan 2021: for every x X there exists some B B such that x B; and. ... for all B1,B2 B and for all x B1 B2 there exists some B3 B suchthat x B3 B1 B2.

11 Sep 2013: C/Λ2 are conformally equivalent if and only if thelattices are related by Λ2 = λΛ1 for some λ C. ... 5. Show that complex tori C/〈1,τ1〉 and C/〈1,τ2〉 are analytically isomorphic if and only if τ2 =. (aτ1 b)/(cτ1 d), for some matrix(a bc d

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. ... 7. Let S be an nn real symmetric matrix with Sk = I for some k 1.

11 Sep 2013: 8. By considering the singularity at or otherwise, show that any injective analytic map f : C Chas the form f(z) = az b, for some a C and b C. ... conformally equivalent). 10. Define an equivalence relation on C by z w iff z = 2sw for some s Z.

15 Oct 2021: for some a < b. ... Lu = u in I, u(a) = u(b) = 0, (?). for some 2 R. Show that the Wronskian:. W(x) = p(x)u0(x)ũ(x) u(x)ũ0(x).

27 Nov 2019: 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.

5 Jun 2020: nlog Qn(B(X. n1 , D)) some finite R bits/symbol, w.p.1. – This suggests a natural lossy analog for the Shannon code-lengths:. ... with either: (a) n(θ) =. dim(Qθ)2 log n. (b) n(θ) =. (θ) for θ in some countable Γ Θ;. otherwiseConsistency? Does

15 Oct 2021: V 0[|E|2 |B|2. ] V µTµ0[F ]. 1. 4V 0. [|E|2 |B|2. ... T(X,Y ) = TσµνXµY νeσ. for some Crfunctions Tσµν := eσ [T(eµ,eν)].

2 Oct 2006: Let kL = kK (b) for some b with bq = a kK kpK , and let u oLbe any lift of b. ... Assume thereexists a surjection (K′/K) (oK′/pλ)d1 for some λ 0. Then.

8 Nov 2022: Show that H is normal in G if and only if H is a unionof some conjugacy classes of G. ... 1. |G|gG|Fix(g)|. Deduce that if G acts transitively and |X| > 1, then there is some g G with no xed point.How many distinct ways are there to

15 Oct 2021: 0. for some ai. 2 R. Show that there is a unique f : R! ... Show that:f(x) = g(x) p. k1(x). for some polynomial pk1 of order k 1.

31 Mar 2024: Show further that if f : X Y is a continuous function between Polish spacesand f is injective on a Borel set B X, then f(B) is Borel. ... 14. Prove that a set A (in some Polish space) is analytic if and only if there exist closedsets An1,.,nk (indexed by

10 Oct 2006: n}.How large can we make a family A of subsets of [n] subject to thecondition that for all A, A′ A, there is some B B with B A A′? ... n}.How large can we make a family A of subsets of [n] subject to thecondition that for all A, A′ A, there is some

20 Oct 2007: f(z) =a(z z0) bc(z z0) d. ,. for some a,b,c,d,z0 C. ... 1 < |z| < 2}, {0 < |z| < 1}, {0 < |z| < }. 8. (i) Let R and S be some Riemann surfaces, f : R S a continuous map, and p a pointin R.

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. ... 7. Let S be an nn real symmetric matrix with Sk = I for some k 1.

23 Mar 2009: b = uac for some unit u. Then g̃ = uf k̃ and sog = ag̃ = f uak̃ and so f|g in R[X]. ... f (X) = af̃ (X) for some a R and primitive f̃ R[X], and so.

24 Jan 2015: C/Λ2 are conformally equivalent if and only if thelattices are related by Λ2 = λΛ1 for some λ C. ... 5. Show that complex tori C/〈1,τ1〉 and C/〈1,τ2〉 are analytically isomorphic if and only if τ2 =. (aτ1 b)/(cτ1 d), for some matrix(a bc d

5 Apr 2007: First note the following. Lemma 5.1. T is open iff T (B(1)) B(ǫ) for some ǫ > 0.Proof. ... Since by Theorem 5.3, we have. T (B(1)) B(δ),for some δ > 0, it follows that.

28 Nov 2012: F maps some neighbourhood U of x dif-feomorphically onto a neighbourhood V of (y,T(x)). ... for some function τ(s). (Note that 〈b, ḃ〉 = 0 since b has unit norm.).

7 Dec 2009: 5. (i) Suppose that f : R2 R is such that D1f = f/x is continuous in some open ball around(a,b), and D2f = f/y exists at (a,b). ... 11. Show that there is a continuous square-root function on some neighbourhood of I in Mn;that is, show that there is an

8 Nov 2021: Show that H is normal in G if and only if H is a unionof some conjugacy classes of G. ... 1. |G|gG|Fix(g)|. Deduce that if G acts transitively and |X| > 1, then there is some g G with no xed point.How many distinct ways are there to

15 Oct 2021: 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.

2 Dec 2013: Show that f and g havethe same splitting field if and only if b = cmar for some c K and r N with gcd(r,m) = 1. ... Deduce that every finite abelian groupis the Galois group of some Galois extension K/Q.

24 Nov 2022: 7. 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. ... b) Suppose instead that D1f exists and is bounded on some open ball around (a, b), and.

11 Nov 2019: Some more terminology: B is called the base and E the total space of this vector bundle. ... The ψβα’s can be taken from some vector bundle E over B, then P will be‘constructed from E’.

24 Jan 2015: 8. By considering the singularity at or otherwise, show that any injective analytic map f : C Chas the form f(z) = az b, for some a C and b C. ... conformally equivalent). 10. Define an equivalence relation on C by z w iff z = 2sw for some s Z.

11 Nov 2020: We will need the following stronger result. To state it, we introduce some nota-tions. ... In the following, we hence assume without loss of generality that b iss0-decent, for some fixed s0 N.

15 Oct 2021: i) If x S, then there exists some B β with x B.ii) If B1, B2 β, then for every x B1 B2 there exists B β with:. ... x B B B1 B2. b) Conversely, suppose that one is given a set S and a collection β of subsets of Ssatisfying i), ii) above.

12 Nov 2012: B) A Theorem of Mertens states that. p6x. log p. p= log x O(1). ... where b|a. At leastcompute some examples and find out what generally is the real represented.