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  2. Complex Analysis IB, 2015 Example sheet 1 1 Let ...

    https://www.dpmms.cam.ac.uk/~ajs1005/complex/ex-sheet1.pdf
    27 Jan 2015: a). n=1. nenz on {z. 0 < r Re(z)}; (b) n=1. ... Can such a map ever be a Möbius trans-formation? 9 Calculateγ z sin z dz when γ is the straight line joining 0 to i.
  3. Michaelmas Term 2020-21 Number Theory: Examples Sheet 1 of ...

    https://www.dpmms.cam.ac.uk/study/II/NumberTheory/2020-2021/number_theory-20-1.pdf
    23 Oct 2020: Calculate d = (a,b) and find integers r and s such that ra sb = d when. ... iii) Find constants c and d such that λ(a,b) 6 c log b d.
  4. LINEAR ANALYSIS – EXAMPLES 2 1. Let f : ...

    https://www.dpmms.cam.ac.uk/study/II/LinearAnalysis/2020-2021/EX-LinAn-2.pdf
    3 Nov 2020: 2. Given (fi)iI an arbitrary collection of continuous functions [0, 1] R such thatsupiI |fi(x)| < at each x [0, 1], show that there is an interval [a,b] [0, ... 1] witha < b such that supx[a,b] supiI |fi(x)| <. 3. Let X be a closed subspace of 1. Assume
  5. Michaelmas Term 2011 J. M. E. Hyland Linear Algebra: ...

    https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/3rdla11.pdf
    13 Nov 2011: Showthat there is a vector x such that x, α(x), α2(x),. , ... 9. (i) Show that if x 6= y are vectors in the finite dimensional vector space V , then there is a linearfunctional θ V such that θ(x) 6=
  6. A Model Tripos Question Thomas Forster November 20, 2007 ...

    https://www.dpmms.cam.ac.uk/~tef10/cam_only/dualityquestion.pdf
    20 Nov 2007: p’ and ‘q’ beingliterals—even tho’ A XOR B is not self-dual in general.). ... Show—by considering disjunctive normal forms or otherwise—that whenever A is a self-dual formula there is a formulaB such that A is logically equivalent to B B̂.
  7. Stable commutator length, surfaces, and rationality

    https://www.dpmms.cam.ac.uk/~aptm3/docs/maths/2024-Poster-SCLSurfacesRationality.pdf
    26 Jan 2024: a2. b2. ak. bk. Example. Given a, b G,. sclG ([a, b]) 12χ. ... such thatD(φ) := sup.
  8. More on Church-Oswald Models for Set Theory Thomas Forster ...

    https://www.dpmms.cam.ac.uk/~tef10/COmodels.pdf
    8 Apr 2021: That is why I am sopleased that Tim Button seems to have proved such a result. ... such that the restriction of M1 to v1 is a structureisomorphic to M0.
  9. Counting the Primes Using Entropy Lecture given on Thursday, ...

    https://www.dpmms.cam.ac.uk/~ik355/PAPERS/NewsLetter.pdf
    5 Jun 2020: Yπ(n)π(n) , (6). whereM 1 is the largest integer such thatM 2 divides N ,and theYi are now binary. ... Actually Chebyshev came pretty close to proving the PNT.For example, using Theorem 1 in a slightly refined form, hewas able to find explicit
  10. GLOBAL SECTIONS OF EQUIVARIANT LINE BUNDLES ON THE p-ADIC ...

    https://www.dpmms.cam.ac.uk/~sjw47/Drinfeld.pdf
    20 Dec 2023: Proposition 2.1.1. ([25, Exercise 2F]) For every ring homomorphism φ: A Band element b B such that bφ(a)φ(a)b = φ(δ(a)) for all a A, ... there is a uniquering homomorphism ψ : A[T; δ] B such that ψ|A = φ and ψ(T) = b.
  11. ON THE CARTAN MAP FOR CROSSED PRODUCTS ANDHOPF-GALOIS EXTENSIONS ...

    https://www.dpmms.cam.ac.uk/~sjw47/HopfGalois.pdf
    27 Feb 2008: extensions. We show that the Cartan map from K-theory to G-theory of such. ... Regarding the assumption on B, we ask the following. Question. Let H be a finite dimensional Hopf algebra such that the Cartan mapc : K0(H) G0(H) is injective and let
  12. Part II Differential Geometry Example Sheet 1 Prof. M. ...

    https://www.dpmms.cam.ac.uk/~md384/m16dgp2_examplesheet1.pdf
    22 Oct 2016: 6. Let X, Y be manifolds. A submersion is defined to be a smooth map f : X Y such thatdfx is surjective for all x X. ... zero outside the ball of radius b > a, and such that f(Rn) [0, 1].These functions are very useful for gluings.
  13. GRAPH THEORY - EXAMPLE SHEET 4 Michaelmas 2021 Julian ...

    https://www.dpmms.cam.ac.uk/study/II/Graphs/2021-2022/graphTheory-4.pdf
    25 Nov 2021: Prove that A. contains an infinite set B such that no point of B is a convex combination of other points of B.
  14. finalTR.dvi

    https://www.dpmms.cam.ac.uk/~ik355/PAPERS/finalTR.pdf
    5 Jun 2020: b) There exist (distinct) points fx0;x1; : : : ;xkg in I such that, for every permutation ofthe indices f0;1; : : : ;kg with not equal to the identity, we have. ... Then by Lemma 1 there is a (unique) < 0 such that (a) holds, and letting W be dened as in
  15. Appendix A Differentiation in one dimension A.1 Introduction We’ll ...

    https://www.dpmms.cam.ac.uk/~cmw50/resources/M2PM1/M2PM1App.pdf
    15 Oct 2021: Suppose further that f(a) = f(b). Then there existsc (a,b) such that f ′(c) = 0. ... Then there exists c (a,b) such that:. f ′(c) =f(b)f(a). ba.
  16. EQUIVARIANT LINE BUNDLES WITH CONNECTION ON THE p-ADIC UPPER ...

    https://www.dpmms.cam.ac.uk/~sjw47/Drinfeld-I.pdf
    14 Sep 2023: If χ: A B is an algebra homomorphismthen there is b B such that χ(x) = bxb1 for all x A. ... Evidently such a pair is also an element of AutA(M/X/G). (b) Given a group homomorphism σ : G AutA(M/X/G) such that pr1 σ =1G, the restriction
  17. 2017ex1.dvi

    https://www.dpmms.cam.ac.uk/study/II/Galois/2017-2018/2017ex1.pdf
    11 Oct 2017: ii) Let α be such that |K(α) : K| is odd. ... and let β = α4.Find. rationals a, b, c such that β = a bα cα2.
  18. Analysis I Prof. T. W. Körner Lent 2003 Contents ...

    https://www.dpmms.cam.ac.uk/~twk10/ExAn1.pdf
    4 Aug 2009: Theorem 5.12. If f : [a,b] R is continuous then we can find x1,x2 [a,b]such that. ... If f : [a,b] R is a continuousfunction with f differentiable on (a,b), then we can find a c (a,b) such that.
  19. EXAMPLE SHEET 4 (LECTURES 19–23) GALOIS THEORY MICHAELMAS 2009 ...

    https://www.dpmms.cam.ac.uk/study/II/Galois/2009-2010/ex4.pdf
    27 Jan 2010: Use a suitableLagrange resolvent to find a Q(µ3) such that K = Q(ζ3, 3. ... Use (ii) to show that there exists b K such thatdet(σiσjQ1(b)) ̸= 0.
  20. Mich 2023 FUNCTIONAL ANALYSIS – EXAMPLES 3 AZ 1. ...

    https://www.dpmms.cam.ac.uk/~az10000/2023-mich-partiii-func-anal-sheet3.pdf
    14 Nov 2023: Show that spanwB =. (B). for B X.Deduce that a w-closed subspace Y of X is a dual space: there is a normedspace Z such that Y = Z. ... Note that such a linear map is bounded.) Show that forT B(X,Y ) the following are all equivalent to T being weakly
  21. Example sheet 1, Galois Theory (Michaelmas 2013)…

    https://www.dpmms.cam.ac.uk/~ajs1005/gal2d/ex-sheet1.pdf
    3 Nov 2013: Find a, b, c Q such thaty = a bx cx2. ... 15. Let K and L be subfields of a field M such that M/K is finite.
  22. The Beilinson conjectures Christopher Deninger and Anthony J. Scholl* …

    https://www.dpmms.cam.ac.uk/~ajs1005/preprints/d-s.pdf
    18 Feb 2010: abelian category of “mixed motives”. The ultimate definition of such a category remains to be found. ... φ : IK T. Here T/K is a number field and there exist integers a, b with ab = w such that.
  23. Michaelmas Term 2003 J. M. E. Hyland Linear Algebra: ...

    https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/3rdla03.pdf
    12 Aug 2008: 5. Show that if x 6= y are vectors in the finite dimensional vector space V , then there is a linear functionalθ V such that θ(x) 6= θ(y). ... fn for V such that when x =. m1xiei and y =. n1yjfj we. have ψ(x, y) =r. 1xkyk, where r is the rank of ψ.
  24. Mich. 2016 NUMBERS AND SETS—EXAMPLES 4 PAR 1. The ...

    https://www.dpmms.cam.ac.uk/study/IA/Numbers%2BSets/2016-2017/2016ns4.pdf
    23 Nov 2016: Mich. 2016 NUMBERS AND SETS—EXAMPLES 4 PAR. 1. The symmetric difference A4B of two sets A and B is defined to be the set of elements x such that xis ... 11. Let S be a collection of subsets of N such that for all A, B S we have A B or B A.
  25. Michaelmas Term 2019-2020 Number Theory: Examples Sheet 1 of ...

    https://www.dpmms.cam.ac.uk/study/II/NumberTheory/2019-2020/number_theory-19-1.pdf
    16 Oct 2019: Calculate d = (a,b) and find integers r and s such that ra sb = d when. ... iii) Find constants c and d such that λ(a,b) 6 c log b d.
  26. 4thla13.dvi

    https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/4thla13.pdf
    27 Nov 2013: 6. Let a1, a2,. , an be real numbers such that a1 an = 0 and a21 a. ... 9. (i) Show that if x 6= y are vectors in the finite dimensional vector space V , then there is a linearfunctional θ V such that θ(x) 6=
  27. ÙD-MODULES ON RIGID ANALYTIC SPACES III:WEAK HOLONOMICITY AND…

    https://www.dpmms.cam.ac.uk/~sjw47/DCapThree.pdf
    1 May 2019: By definition, there exists some Zariskiopen affine subscheme Ux = Spec B(x) X containing x such that x1,. ... skd.Fix k such that x Spec Afk. Then B(x)fk A 1(X) is freely generated bysk1,.
  28. Mich. 2018 GRAPH THEORY—EXAMPLES 1 PAR 1. Show that ...

    https://www.dpmms.cam.ac.uk/study/II/Graphs/2018-2019/18sheet1.pdf
    9 Oct 2018: Show that f isbounded. 11. Show that there is an infinite set S of positive integers such that the sum of any two distinct elements. ... b) a collection of 100 horizontal lines and 100 vertical lines such that the 10,000 points of intersection are.
  29. Lent Term 2008 J. M. E. Hyland Set Theory ...

    https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/stl07ex3.pdf
    6 Mar 2008: vertices into sets B andR such that the only edges lie between vertices in different sets.(i) Show that if any finite subgraph of a graph is bipartite, then so is ... Suppose that any such formula is equivalent modulo T to aquantifier-free formula.
  30. Lent Term 2009 J. M. E. Hyland Set Theory ...

    https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/stl08ex3.pdf
    23 Feb 2009: A graph is bipartite or 2-colourable if we can partition the set of vertices into sets B andR such that the only edges lie between vertices in different sets.(i) ... Suppose that any such formula is equivalent modulo T to aquantifier-free formula.
  31. Example sheet 4, Galois Theory, 2019. 1. (i) Let ...

    https://www.dpmms.cam.ac.uk/study/II/Galois/2019-2020/ex4.pdf
    27 Nov 2019: Let a, b K such that thepolynomials f = xm a, g = xm b are irreducible. ... Show that G is solvable if and only if there is an i such that.
  32. Chapter 1 Test functions Before we introduce distributions, we’re ...

    https://www.dpmms.cam.ac.uk/~cmw50/resources/M3P18/M3P18Ch1.pdf
    15 Oct 2021: Proof. Since is open, there exists ,x such that the ball B(x) = {y Rn : |y x| < }is contained in. ... Chapter 1 Test functions 3. a) Show that χ C(R). b) Show that there exists a function ψ C0 (Rn) such that.
  33. 2016ex1.dvi

    https://www.dpmms.cam.ac.uk/study/II/Galois/2016-2017/2016ex1.pdf
    17 Oct 2016: ii) Let α be such that |K(α) : K| is odd. ... and let β = α4.Find. rationals a, b, c such that β = a bα cα2.
  34. Appendix A Some background results A.1 Differentiating functions of…

    https://www.dpmms.cam.ac.uk/~cmw50/resources/M3P18/M3P18App.pdf
    15 Oct 2021: a b = b a, a b = b a. iv) There exist unique, distinct, additive and multiplicative identity elements: there exist0 Φ and 1 Φ with 0 6= 1 such that for ... By the definition of τ,there exists B such that x B W and B has the form.
  35. 22 Oct 2020: We write w ̃σw′ if there exists τ ̆ such that w σ τw′σ(τ)1. ... scheme over Fq, i.e. a scheme over Fq such that the absolute Frobenius is an isomorphism.
  36. Logic and Set Theory Examples 4 PTJ Lent 2016 ...

    https://www.dpmms.cam.ac.uk/study/II/Logic/2015-2016/LSqns4.pdf
    29 Feb 2016: 8. By a selection function for a set a, we mean a function s: Pa Pa such that s(b) b for allb a, both inclusions being strict unless b is ... First show that there exists β < α such that |f(β) f(γ)| < 1 for allγ > β.].
  37. GEOMETRY — Example Sheet 2TKC Lent 2009 1. Prove ...

    https://www.dpmms.cam.ac.uk/~tkc10/Geometry_2009/Exercise_2.pdf
    20 Feb 2009: Show that every such transformationis an isometry for the hyperbolic metric. ... Every such quaternion q can be written asq0 q1i q2j q3k where.
  38. Mich. 2016 NUMBERS AND SETS – EXAMPLES 1 PAR ...

    https://www.dpmms.cam.ac.uk/study/IA/Numbers%2BSets/2016-2017/2016ns1.pdf
    14 Oct 2016: c) Let x be a non-zero rational number. Show that there is a rational number y such thatxy = 1. ... d) Show that if a and b are natural numbers such that a is a factor of b then a 6 b.
  39. Stochastic Financial Models Michael TehranchiExample sheet 1 -…

    https://www.dpmms.cam.ac.uk/study/II/FinancialModels/2022-2023/example1.pdf
    4 Oct 2022: b) Now let X and Y be jointly Gaussian random vectors such that Cov(X) is positivedefinite. ... Let Qbe the equivalent probability measure such that dQ. dP eX.
  40. 7 Aug 2015: B/A. such that for any Banach B-module M there is a natural isomorphism. ... Then thereis a unique A-linear map. ψ : DerK(A) DerK(B). such that ψ(u) ϕ = ϕu for each u DerK(A).
  41. Stochastic Financial Models Michael TehranchiExample sheet 2 -…

    https://www.dpmms.cam.ac.uk/study/II/FinancialModels/2022-2023/example2.pdf
    4 Oct 2022: n such that Ax = 0.• There exists a y Rm with (AT y)i 0 for all i = 1,. , ... Make this assumption for the rest of the problem.(b) Why must there exist an equivalent measure Q such that 1.
  42. Lent 2013 LINEAR ANALYSIS – EXAMPLES 4 AZ 1. ...

    https://www.dpmms.cam.ac.uk/study/II/LinearAnalysis/2012-2013/sheet4.pdf
    12 Mar 2013: Show that I T hasa square root, i.e., there exists S B(X) such that S2 = I T. ... invertible operator T : X X such that Txn = yn for all n N.
  43. Linear Analysis T. W. Körner January 8, 2008 Small ...

    https://www.dpmms.cam.ac.uk/~twk10/LA.pdf
    8 Jan 2008: v) If ‖a b‖1 = ‖a‖1 ‖b‖1, does it follow that we can find α, β F,not both zero, such that βaj = αbj for all 1 j n? ... Give reasons. (vi) If ‖ab‖ = ‖a‖ ‖b‖, does it follow that we can find α, β F,not both zero, such that
  44. Topics in Analysis: Example Sheet 1 Lent 2007-08 N. ...

    https://www.dpmms.cam.ac.uk/study/II/TopicsinAnalysis/2007-2008/sheet1.pdf
    4 Feb 2008: Let P be the set of all p Q such that 2 < p2 < 3. ... c) If A and B are closed subsets of R such that 1 A, 1 B and [1, 1] A B, thenA B 6=.
  45. NUMBER FIELDS, LENT 2024 PÉTER P. VARJÚ Disclaimer,…

    https://www.dpmms.cam.ac.uk/~pv270/NumberFields.pdf
    8 Mar 2024: αd OK such that. OK = α1Z. αdZ.Such a collection of elements α1,. , ... 14 PÉTER P. VARJÚ. of this form. So no such π1 may exist.
  46. Information and Complexity in Statistical Modeling. By Jorma…

    https://www.dpmms.cam.ac.uk/~ik355/PAPERS/AMMreview.pdf
    5 Jun 2020: According to Occam’s razor, the simplest such explanation isthe one that should be favored. ... Given a string x, suppose wefocus on a special sub-class of programs p that produce x, namely, programs thatfirst describe a set B of strings such that x B,
  47. Part IB - Groups, Rings, and Modules

    https://www.dpmms.cam.ac.uk/~or257/teaching/notes/GRM.pdf
    31 Jan 2024: G = H1 BH2 BH3 BH4 B BHn = {e}. such that each quotient Hi1/Hi is simple. ... Since they have the same cycle type, there is a σ Sn such that (a b c) = σ(1 2 3)σ1.
  48. Mich 2023 FUNCTIONAL ANALYSIS – EXAMPLES 4 AZ 1. ...

    https://www.dpmms.cam.ac.uk/~az10000/2023-mich-partiii-func-anal-sheet4.pdf
    25 Nov 2023: Let θ : A B be a -homomorphism from a Banach -algebra A to a C-algebraB. ... H) such thatz(T) = T, where z(λ) = λ for all λ K.
  49. COMPLEX ANALYSIS EXAMPLES 2, LENT 2022 Neshan Wickramasekera. Please…

    https://www.dpmms.cam.ac.uk/study/IB/ComplexAnalysis/2021-2022/ca_IB_ex2_2022.pdf
    22 Feb 2022: Show that for any b C, there exists a sequence of points zn D(a,R)with zn 6= a such that zn a and f(zn) b as n. ... Find such a sequence when f(z) = e1/z, a = 0 and b = 2.[A much harder theorem of Picard says that in any neighbourhood of an essential
  50. MOD-p ISOGENY CLASSES ON SHIMURA VARIETIES WITH PARAHORIC LEVEL ...

    https://www.dpmms.cam.ac.uk/~rz240/Mod-p_isog2.pdf
    22 Oct 2020: Let B(G,F) be the (extended) Bruhat–Tits building of G(F). For any x B(G,F), there is asmooth affine group scheme Gx over OF such that ... a choice of basis b for Λ such that the embeddings of buildings (3.3.1) and (3.3.2) induceembeddings of the
  51. Prof. A. Baker Number Fields Examples Michaelmas Term 2002 ...

    https://www.dpmms.cam.ac.uk/study/II/NumberFields/ex01.pdf
    21 May 2005: for some x,y Z with (x,y) = 1, then there exist a,b Z such that p = a2 b2. ... αn be algebraicintegers in K such that the discriminant D(α1,. ,αn) is a square-free non-zerointeger.

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