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Riemannian metrics define ordinary metrics Recall that if g ...
https://www.dpmms.cam.ac.uk/~jar60/GeometryHandout1.pdf11 Feb 2014: It follows that for such q, gq λI is positive definite. ... The set of all such t is closed andcontained in [a,b], so it has a minimum value t0. -
Michaelmas Term 2014 SJW Linear Algebra: Example Sheet 4 ...
https://www.dpmms.cam.ac.uk/~sjw47/LinAlg14-4.pdf4 Dec 2014: If A is the matrix of the first of these (say), find a non-singular matrix P such that PTAP is diagonalwith entries 1. ... 14. Let a1, a2,. , an be real numbers such that a1 an = 0 and a21 a2n = 1. -
Algebraic Number Theory — problem sheet #3 1. (i) ...
https://www.dpmms.cam.ac.uk/~ajs1005/ANT/ex-sheet3.pdf6 Mar 2014: Show that for any Hecke character χ, thereexist continuous χv : Kv C (v ΣK) such that. ... πv7. )= 1. Show that there is a unique Hecke character χ of K such that. • -
Stable moduli spaces of high dimensional manifolds Oscar…
https://www.dpmms.cam.ac.uk/~or257/StabilityIIOberwolfach.pdf22 Sep 2014: homotopy equivalences f : B B such that. θ f = θ. ... Homology stability with respect to higher handles. A further immediateconsequence of Theorem B is an analogous homological stability theorem for gluingon to W a θ-cobordism K : W P such that -
ANALYSIS II—EXAMPLES 2 Mich. 2014 Please email comments, corrections…
https://www.dpmms.cam.ac.uk/study/IB/AnalysisII/2014-2015/14sheet2.pdf3 Nov 2014: b) Let C1c ([0, 1]) be the set of functions f C1([0, 1]) such that f(x) = 0 for x in some neighborhood ofthe end points 0 and 1. ... If Sis a subset of C([a,b]) such that every sequence in S has a subsequence converging uniformly to a functionin S (i.e. -
Michaelmas Term 2014 SJW Linear Algebra: Example Sheet 3 ...
https://www.dpmms.cam.ac.uk/~sjw47/LinAlg14-3.pdf10 Nov 2014: linearfunctional θ V such that θ(x) 6= θ(y).(b) Suppose that V is finite dimensional. ... If no such subspaceexists, show that there exists a basis 〈v,α(v),. -
ANALYSIS 1 EXAMPLES SHEET 2 Lent Term 2014 W. ...
https://www.dpmms.cam.ac.uk/study/IA/AnalysisI/2013-2014/analysis1examples2.pdf7 Feb 2014: That is, for everya < b and every t there should exist x (a,b) such that f(x) = t. ... 14. Let f : R R be a function that has the intermediate value property: that is, iff(a) < c < f(b) then there exists x (a,b) such that f(x) = -
ANALYSIS II—EXAMPLES 1 Mich. 2014 Please email comments, corrections…
https://www.dpmms.cam.ac.uk/study/IB/AnalysisII/2014-2015/14sheet1.pdf20 Oct 2014: On the other hand, show that if fn does notconverge uniformly to f then we can find a convergent sequence xm x in [a,b] such that fn(xn) 6 ... a) Must there exist a sequence (fn) of continuous functions on [0, 1] such that fn f uniformly on [0, 1]?(b)? -
Numbers and Sets (2014–15) Example Sheet 4 of 4 ...
https://www.dpmms.cam.ac.uk/study/IA/Numbers%2BSets/2014-2015/examples-NS-14-4.pdf25 Nov 2014: n=1x3n? 14. Let S PN be such that if A, B S then A B or B A. ... Can S be uncountable?Is there an uncountable family T PN such that AB is finite for all distinct A, B T? -
Groups Example Sheet 1Michaelmas 2014 Julia Goedecke Please send ...
https://www.dpmms.cam.ac.uk/study/IA/Groups/2014-2015/GroupsSheet1-2014.pdf10 Oct 2014: a) Let a G. Show that there is a positive integer n such that an = e, the identity element.(The least such positive n is the order of a.). ... b) Show that there exists a positive integer n such that an = e for all a G.(The least such positive n is the -
ANALYSIS 1 EXAMPLES SHEET 3 Lent Term 2014 W. ...
https://www.dpmms.cam.ac.uk/study/IA/AnalysisI/2013-2014/analysis1examples3.pdf5 Mar 2014: Deducethe more general result that if f ′(a) 6= f ′(b) and z lies between f ′(a) and f ′(b), then thereexists c (a,b) such that f ′(c) = z. ... f(a) < 0 and f(b) > 0 then there exists c (a,b)such that f(c) = 0. -
Michaelmas Term 2014 T.A. Fisher Number Theory: Example Sheet ...
https://www.dpmms.cam.ac.uk/study/II/NumberTheory/2014-2015/number_theory-14-1.pdf17 Oct 2014: 1. 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. -
PART II REPRESENTATION THEORYSHEET 4 Unless otherwise stated, all ...
https://www.dpmms.cam.ac.uk/study/II/RepresentationTheory/2013-2014/repex4.pdf15 Jan 2014: In this and the followingquestions, you are not being asked to find such an isomorphism explicitly.). ... Here O(n) denotesthe subgroup of GLn(R) preserving the standard (positive definite) symmetric bilinear form.(b) Explicitly construct such a -
Michaelmas Term 2014 SJW Linear Algebra: Example Sheet 3 ...
https://www.dpmms.cam.ac.uk/study/IB/LinearAlgebra/2014-2015/lin_alg-14-3.pdf11 Nov 2014: linearfunctional θ V such that θ(x) 6= θ(y).(b) Suppose that V is finite dimensional. ... If no such subspaceexists, show that there exists a basis 〈v,α(v),. -
STATISTICAL MODELLING Part IICExample Sheet 2 (of 4) RDS/Lent ...
https://www.dpmms.cam.ac.uk/study/II/StatisticalModelling/2013-2014/ex2_2014.pdf18 Feb 2014: b) The model is to be reparametrised in such a way that it can be specialised to (i)two parallel lines for the two groups, (ii) two lines with the same ... 8. (a) Let A be a pp non-singular matrix and let b Rp. -
TECHNIQUES IN COMBINATORICS: EXAMPLES SHEET 1 Michaelmas Term 2014 ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TechniquesinCombinatorics/techniques2014examples1.pdf20 Oct 2014: metric relation R defined on X such that for any k elements x1,. ... Prove that there existu,v Zp such that. |A (uB v)| αβp αβp, where uB v denotes the set{ub v : b B}. -
ANALYSIS 1 EXAMPLES SHEET 4 Lent Term 2014 W. ...
https://www.dpmms.cam.ac.uk/study/IA/AnalysisI/2013-2014/analysis1examples4.pdf5 Mar 2014: Prove that f is. integrable. What is 10f(x)dx? 6. Let a < b and let f : [a,b] R be a Riemann integrable function such that f(x) 0for every ... 1, 1], such that f(x) = g(x) h(x) for every x. -
TECHNIQUES IN COMBINATORICS: EXAMPLES SHEET 2 Michaelmas Term 2014 ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TechniquesinCombinatorics/techniques2014examples2.pdf20 Oct 2014: Prove that there are. subsets A X and B G such that |η(A,B) δαβ| θ, where θ > 0 depends on γ andδ only. ... x1,. ,xk such that no xi xj with i,j distinct is a quadratic residue mod p. -
Applications of Mirror Symmetry
https://www.dpmms.cam.ac.uk/~mg475/riverside.pdf16 Jul 2014: singularities is a real manifold Bwith an open subset B0 B, with := B B0 of codimension 2, such that B0 has the structure of an integral affine manifold.We also allow ... X Spec k[[t]]. such that the special fibre satisfies. X0 =. σPmax. Pσ. and the -
TOPICS IN ANALYSIS (Lent 2014): Example Sheet 3. Comments, ...
https://www.dpmms.cam.ac.uk/study/II/TopicsinAnalysis/2013-2014/sheet3.pdf10 Mar 2014: n}, let the non-negative numbers A(n)k andthe ‘nodes’ x. (n)k [a,b] be given such that for each polynomial P , the error. ... such that for every f C([1, 1]), there exists a unique series. -
TOPICS IN SET THEORY: Example Sheet 3 1 Department ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TopicsinSetTheory/TST%20Example%20Sheet%203%202014.pdf19 Dec 2014: if B = {min(Xα) : α < κ} is stationary.(iii) If {Xα : α < κ} is pairwise disjoint, then there exists a [κ]κ such that. ... Prove that there exists a family F of2κ stationary subsets of S such that if A 6= B F , then A B and B A arestationary in -
TOPICS IN SET THEORY: Example Sheet 1 1 Department ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TopicsinSetTheory/TST%20Example%20Sheet%201%202014.pdf19 Dec 2014: i) Prove that 20 = 1 implies the following assertion SD :there exist sets A and B such that R2 = AB and Al and Bm are countablefor every horizontal line l and ... exist x1 and x2 such that x1 6 f(x2) and x2 6 f(x1). -
Notes from Sela’s Fall 2007 course at MSRI Larsen ...
https://www.dpmms.cam.ac.uk/~hjrw2/Notes/sela-msri.pdf18 Sep 2014: Variables, such as x, y, z, a, b, c, or finite tuples of variables: x = (x1,. , ... is true then there exists a homomorphism η : GΣ Mi such that the diagramGΣ. -
Rips Theory.dvi
https://www.dpmms.cam.ac.uk/~hjrw2/Notes/rips.pdf18 Sep 2014: To see this, choose δ such that, for x anend-point of a base b, d(x, bo S) δ. ... Let c b bean interval with end-point x such that c0 S =. Choose δ depending on Kaccording to the previous claim, and let y, k K be such that:. -
Mirror symmetry and the SYZ conjecture
https://www.dpmms.cam.ac.uk/~mg475/current.pdf16 Jul 2014: Mark Gross Mirror symmetry and the SYZ conjecture. Definition. A tropical affine manifold with singularities is a real (C 0) manifoldB along with an open subset B0 B such that := B ... For each integral point v of a two-face, we can choose anopen -
Part II Galois theory (2014–2015) Example Sheet…
https://www.dpmms.cam.ac.uk/study/II/Galois/2014-2015/galois-2014-exa-4.pdf2 Dec 2014: If ϕ AutK(L) where L = K(t), show that there exist a, b, c, d K withad 6= bc such that ϕ(t) = (at b)/(ct d), and conversely that ... a) such that f splits over L = Q(. a)( 3α). -
Essay.dvi
https://www.dpmms.cam.ac.uk/~hjrw2/Notes/Essay.pdf18 Sep 2014: Thence it also extends to M̃. Since M is compact there exists positive such that for all p M, B(p)is ball-like (homeomorphic to a ball in Tp(M) ... 19. Proof: By the definition of the connected sum, there exists an embedded 2-sphere F in M such that M F -
Numbers and Sets (2014–15) Example Sheet 1 of 4 ...
https://www.dpmms.cam.ac.uk/study/IA/Numbers%2BSets/2014-2015/examples-NS-14-1.pdf14 Oct 2014: 8. Let A1, A2, A3,. be sets such that A1 A2. ... c there is an x with a < x < b such that f(x) = c. -
Complex Analysis IB – 2014 – Sheet 2 Recall ...
https://www.dpmms.cam.ac.uk/study/IB/ComplexAnalysis/2013-2014/CxAnalIB-2014-Sheet2.pdf3 Feb 2014: Show that for any b C, there exists a sequence of points zn Ba(r) withzn 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. -
TOPICS IN SET THEORY: Example Sheet 4 1 Department ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TopicsinSetTheory/TST%20Example%20Sheet%204%202014.pdf19 Dec 2014: Let M be a CTM such that (T is an ever-branching Suslin tree )M. ... λ < κ. Prove that if | A |= κ and x Aimplies | x |< λ, then there exists B A such that | B |= κ and (r)(x B)(x 6=y xy = r). -
ON GENUS ONE CURVES OF DEGREE 5 WITHSQUARE-FREE DISCRIMINANT ...
https://www.dpmms.cam.ac.uk/~taf1000/papers/g1squarefree.pdf18 Jul 2014: such that if Φ X5(K) is non-singular then CΦ has Jacobian. ... We define an action. of GL5 GL5 on the space of such matrices via. -
WACT 2013 Towards a Notion of Lambda Monoid Martin ...
https://www.dpmms.cam.ac.uk/~jmeh1/Research/Publications/2014/tnlm14.pdf2 Jan 2014: Hyland. existence of such a situation Lambek and Scott exploit an elegant categorical reduc-. ... for a theory in the language of the pure λ-calculus: such a theory corresponds to a. -
Complex Analysis IB – 2014 – Sheet 1 1. ...
https://www.dpmms.cam.ac.uk/study/IB/ComplexAnalysis/2013-2014/CxAnalIB-2014-Sheet1.pdf14 Jan 2014: Show that T can be written Tz = Az Bz̄for unique A,B C. ... Can such a map be therestriction to the strip of a Möbius map? -
Cube complexes Winter 2011 NON-POSITIVELY CURVED CUBECOMPLEXES Henry…
https://www.dpmms.cam.ac.uk/~hjrw2/Notes/cubenotes.pdf18 Sep 2014: Proof. Let C be such that the Γ-translates of B(x0,C) cover X. ... BecauseB is compact, there is an > 0 such that Bp() is CAT(0) for every p B. -
TECHNIQUES IN COMBINATORICS – LECTURE NOTES W. T. GOWERS ...
https://www.dpmms.cam.ac.uk/study/III/2014-15/TechniquesinCombinatorics/techniques2014notes.pdf20 Oct 2014: such as this. (1) The condition about the number of quadruples a b = c d can be interpreted as. ... Then there exist sets A X and B Y of density α and β such thatη(A,B) αβδ(1 c). -
ON FAMILIES OF 7 AND 11-CONGRUENT ELLIPTIC CURVES TOM ...
https://www.dpmms.cam.ac.uk/~taf1000/papers/congr7and11.pdf15 Apr 2014: 37 ζ. 57 ζ. 67 ) =. 7. Definition 3.4. An invariant of degree m is a homogeneous polynomial I =. I(a,b,c) of degree m such that I g = I ... variables a,b,c such that v g = gv, respectively v g = gT v, for all g G. -
Michaelmas Term 2014 S. J. Wadsley Linear Algebra: Example ...
https://www.dpmms.cam.ac.uk/study/IB/LinearAlgebra/2014-2015/lin_alg-14-4.pdf26 Nov 2014: If A is the matrix of the first of these (say), find a non-singular matrix P such that PTAP is diagonalwith entries 1. ... 14. Let a1, a2,. , an be real numbers such that a1 an = 0 and a21 a2n = 1. -
RANKS OF QUADRATIC TWISTS OF ELLIPTIC CURVES by Mark ...
https://www.dpmms.cam.ac.uk/~taf1000/papers/rankcongr.pdf13 Oct 2014: tion for lattices of such small determinant is typically infeasible. 8 WATKINS, DONNELLY, ELKIES, FISHER, GRANVILLE & ROGERS. ... For instance, Rubinstein [51, (1.15)] reports the biasfor various curves in terms of such an integrated quantity. -
Part II Galois theory (2014–2015) Example Sheet…
https://www.dpmms.cam.ac.uk/study/II/Galois/2014-2015/galois-2014-exa-3.pdf26 Nov 2014: 2) Let K be a field containing an n-th primitive root of unity for some n > 1.Let a,b K such that the polynomials f(t) = tn a and ... Rn = R such that R1 is 1-step constructible from S, andfor each 1 i n 1, Ri1 is 1-step constructible from S {R1,. -
Automorphy lifting for residually reducible l-adic Galois…
https://www.dpmms.cam.ac.uk/~jat58/reducible_lifting.pdf16 Apr 2014: We can find minimalprimes p′A A, p′B B such that p′ = (p′A,p′B). ... the universal lifting under ϕ, and such that the action of ρ|IFṽ on gr.
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