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DIFFERENTIAL GEOMETRY, D COURSE Gabriel P. Paternain Department of ...
https://www.dpmms.cam.ac.uk/~gpp24/dgnotes/dg.pdf28 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.). -
Lent 2024 LOGIC AND SET THEORY – EXAMPLES 4 ...
https://www.dpmms.cam.ac.uk/~az10000/2024-lent-partii-logic-and-set-sheet4.pdf31 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 -
Michaelmas Term 2014 SJW Linear Algebra: Example Sheet 4 ...
https://www.dpmms.cam.ac.uk/~sjw47/LinAlg14-4.pdf4 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. -
ANALYSIS II (Michaelmas 2009): EXAMPLES 4 The questions are ...
https://www.dpmms.cam.ac.uk/~agk22/anII-09-4.pdf7 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 -
Unique Factorization Domains A unique factorization domain (UFD) is…
https://www.dpmms.cam.ac.uk/~par31/notes/ufd.pdf23 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. -
RIEMANN SURFACES EXAMPLES 2 G.P. Paternain Lent 2015 Comments ...
https://www.dpmms.cam.ac.uk/~gpp24/rs_ex2_15.pdf24 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 -
IA Groups - Example Sheet 3 Michaelmas 2021 rdc26@cam.ac.uk ...
https://www.dpmms.cam.ac.uk/study/IA/Groups/2021-2022/gps321.pdf8 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 -
GEOMETRY Keith Carne t.k.carne@dpmms.cam.ac.uk…
https://www.dpmms.cam.ac.uk/~tkc10/Geometry_2009/Overhead_1.pdf28 Jan 2009: Proposition 1.2 Isometries of E2. An orientation preserving isometry of E2 is:(a) The identity.(b) A translation.(c) A rotation about some point c E2. ... a) The identity.(b) A translation.(c) A rotation about some line. (d) A screw rotation, that is a -
Example sheet 4, Galois Theory (Michaelmas 2013)…
https://www.dpmms.cam.ac.uk/~ajs1005/gal2d/ex-sheet4.pdf2 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. -
Example sheet 4, Galois Theory, 2021. 1. (i) Let ...
https://www.dpmms.cam.ac.uk/study/II/Galois/2021-2022/ex4_2021.pdf15 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. -
Part III: Differential geometry (Michaelmas 2004) Alexei Kovalev…
https://www.dpmms.cam.ac.uk/~agk22/vb.pdf11 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’. -
Mich. 2022 ANALYSIS AND TOPOLOGY—EXAMPLES 4 PAR 1. Define ...
https://www.dpmms.cam.ac.uk/study/IB/AnalysisandTopology/2022-2023/22sheet4.pdf24 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. -
RIEMANN SURFACES EXAMPLES 1 G.P. Paternain Lent 2015 Comments ...
https://www.dpmms.cam.ac.uk/~gpp24/rs_ex1_15.pdf24 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. -
Maximum Likelihood Estimationfor Lossy Data Compression∗ Matthew…
https://www.dpmms.cam.ac.uk/~ik355/PAPERS/MLE.pdf5 Jun 2020: for some appropriate rate function R(P,Q,D), except perhaps for a single value of Ddenoted Dmin. ... 1n. log Q̂nn(B(Xn1 ,D)). a.s. infQΘ1n. log Qn(B(Xn1 ,D)) n,. for some sequence (n)n1 with n 0 as n. -
Example Sheet A M3P18: Fourier Analysis and Theory of ...
https://www.dpmms.cam.ac.uk/~cmw50/resources/M3P18/FAproblemsA.pdf15 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. -
nt12-3.dvi
https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/nt12-3.pdf12 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. -
Lossless Compression with Moderate Error Probability
https://www.dpmms.cam.ac.uk/~ik355/PAPERS/MDP.pdf5 Jun 2020: Corollary 2.2: Fix some b > 0 consider the rates RN :=. 1The result of [24] is actually for source coding with side information,which subsumes the fixed-length lossless source setting. ... fix some b R+ and define τN :=. σ2(p)N b and RN :=. H(p) τN. -
Michaelmas Term 2016 SJW Linear Algebra: Example Sheet 4 ...
https://www.dpmms.cam.ac.uk/~sjw47/lin_alg-16-4.pdf21 Nov 2016: 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. -
Church’s Set Theory with a Universal Set Thomas Forster ...
https://www.dpmms.cam.ac.uk/~tef10/church2001.pdf7 May 2008: x =V for some n, and of course this cannot happen in ZF. ). ... If w is a molecular term of rank n then, in full generality, it is w′g forsome constant g and some boolean combination w′ of B(zi) for various i. -
Part IID RIEMANN SURFACES (2007–2008): Example Sheet 4…
https://www.dpmms.cam.ac.uk/~agk22/rs4.pdf21 Nov 2007: Questions 7–10 are more challenging than others and some parts certainly go beyond limitsof the examination. ... neous cubic polynomial in the generalized Weierstrass normal form XZ24Y 3AX2Y BX3,for some complex constants A, B, A3 27B2 6= 0. -
exsh3.dvi
https://www.dpmms.cam.ac.uk/study/II/AutomataAndFormalLanguages/2020-2021/exsh3.pdf9 Nov 2020: a) All words w {0, 1} consisting of either the string 01 repeated some number oftimes (possibly none), or the string 010 repeated some number of times (possiblynone). ... b) All words w {a, b, c} consisting of some number of a’s (possibly none), -
Appendix A Differentiation in one dimension A.1 Introduction We’ll ...
https://www.dpmms.cam.ac.uk/~cmw50/resources/M2PM1/M2PM1App.pdf15 Oct 2021: some function which maps an interval (a,b) with a < b to thereal line R. ... Thenf(x) = C for some C R. Proof. Pick c,d with a < c < d < b. -
Example Sheet 1 Part III: Analysis of PDEClaude Warnick ...
https://www.dpmms.cam.ac.uk/~cmw50/resources/PartIIIPDE/PDEEx1.pdf15 Oct 2021: Show that ifeb|k|. f̂(k) 2 L2(R) for some b > 0 then f is real analytic at each point in R. ... B to mean that there exists a universal constant C such that A CB. -
Deformations of Galois representations: basics
https://www.dpmms.cam.ac.uk/~jcsl5/automorphylifting/2-Jef.pdf11 Feb 2021: Motivation. Let F : (Schemes)opp (Sets) be a functor represented by some(noetherian) scheme M. ... A ĈO, and representable if F (A) = Hom(R,A) for some R ĈO. -
RIEMANN SURFACES EXAMPLES 2 G.P. Paternain Lent 2016 Comments ...
https://www.dpmms.cam.ac.uk/~gpp24/rs_ex2_16.pdf17 Jan 2016: 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 -
Homotopy Theory, Examples 3 Oscar Randal-Williams Lent 2021 1.* ...
https://www.dpmms.cam.ac.uk/~or257/teaching/IIIHtyThy2021/Sheet3.pdf16 Mar 2021: F i //. Ep //. p. B. {b0} // B B. ... for some monic polynomial p(x) H(B; Z)[x]. Homotopy Theory Example sheet 3. -
Geometry of universal local lifting rings and some deformation…
https://www.dpmms.cam.ac.uk/~jcsl5/automorphylifting/7-Guillem.pdf18 Mar 2021: 1 Unramified up to twist: τ = (ψ ψ, 0) for some characterψ : IK C. ... 4 Irreducible: τ = (r0, 0) where r0 is the restriction of some irreducibleWeil-Deligne representation. -
Lent 2017 ANALYSIS I – EXAMPLES 3 AZ 1. ...
https://www.dpmms.cam.ac.uk/study/IA/AnalysisI/2016-2017/sheet3.pdf10 Mar 2017: 3. Prove Cauchy’s mean value theorem: let f,g : [a,b] R be continuous functionswhich are differentiable on the open interval (a,b); show that for some c ... Show thatif f ′(a) < y < f ′(b) for some a < b in I and y R, then there exists x I witha < -
Mathematical Tripos: Part IB DJS/Lent 2015 Statistics: Example Sheet…
https://www.dpmms.cam.ac.uk/study/IB/Statistics/2014-2015/ex1.pdf22 Jan 2015: Xn be independent Poisson random variables, with Xi having meaniθ, for some θ > 0. ... b) For some n > 2, let X1,. ,Xn be iid with Xi Exponential(θ). -
Chapter 1 Uniform continuity and convergence So far, we ...
https://www.dpmms.cam.ac.uk/~cmw50/resources/M2PM1/M2PM1Ch1.pdf15 Oct 2021: supx(a,b). f ′i(x) Mfor some M independent of i. Show that F is uniformly equicontinuous. ... supx[a,b]. |fi(x)| K. for some K independent of i. Then F has a subsequence which converges uniformly. -
MINIMISATION OF 2-COVERINGS OF GENUS 2 JACOBIANS TOM FISHER ...
https://www.dpmms.cam.ac.uk/~taf1000/papers/g2minimise.pdf12 Sep 2023: If r = 3 then ker H = 〈e12,e13,ae23 be14〉 for some a,b k. ... If r = 3 then ker H = 〈e12,e23 ae13,e14 be13〉 for some a,b k. -
If (zn) is an infinite sequence of points in ...
https://www.dpmms.cam.ac.uk/~tkc10/ComplexDE/Weierstrass.pdf12 Mar 2008: If g is another such function then f(z) = g(z) exp h(z)for some entire function h. ... If g were another such function then g/f would be an entire function with no zeros and thereforeequal to exp h for some entire function h. -
RIEMANN SURFACES EXAMPLES 1 G.P. Paternain Lent 2016 Comments ...
https://www.dpmms.cam.ac.uk/~gpp24/rs_ex1_16.pdf17 Jan 2016: 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. -
Automorphy of some residually S5 Galois representations…
https://www.dpmms.cam.ac.uk/~jat58/quintic.pdf27 Apr 2016: Automorphy of some residually S5 Galois representations. Chandrashekhar B. Khare and Jack A. ... 5 3000)x4 (. 5 5)x/2 (1440. 5 3600). 4 Some group theory. -
Number Fields IID, Lent 2021: Example Sheet 3 of ...
https://www.dpmms.cam.ac.uk/~ajs1005/nf2d/number_fields-21-3.pdf15 Jan 2021: some a,b 0. Hence prove that the class group of K is cyclic and find itsorder. -
Part IID RIEMANN SURFACES (2005–2006): Example Sheet 2…
https://www.dpmms.cam.ac.uk/study/II/Riemann/2005-2006/rs2.pdf3 Feb 2006: 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. -
Part IIB RIEMANN SURFACES (2004–2005): Example Sheet 2…
https://www.dpmms.cam.ac.uk/study/II/Riemann/2004-2005/rs2.pdf21 May 2005: χ(z w) χ(z) χ(w). Remark for readers of Ahlfors or Jones & Singerman: their σ and ζ are not quite the same asψ and χ here, but for some ... f(z) =a(z z0) bc(z z0) d. ,. for some a,b,c,d,z0 C. -
Part IID RIEMANN SURFACES (2006–2007): Example Sheet 2…
https://www.dpmms.cam.ac.uk/study/II/Riemann/2006-2007/rs2.pdf21 Oct 2006: 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. -
/Users/perlasousi/Dropbox (Cambridge…
https://www.dpmms.cam.ac.uk/study/IA/Probability/2020-2021/pex1.pdf20 Jan 2021: 6. Let (An : n N) be a sequence of events in some probability space (, F, P). ... P(Xn = 0) 12π. h. (b) Show further that, for all x R,. -
A NOTE ON THE FAMILY SIGNATURE THEOREM OSCAR RANDAL-WILLIAMS ...
https://www.dpmms.cam.ac.uk/~or257/FamilySignature.pdf23 Jan 2019: As described above, by a theorem of Borel[Bor74] the maps (3.1) are isomorphisms, so ch4kd(ξH) is equal to some poly-nomial p(σ1,σ2,. , ... Hi(B; Q) 0.Now s(τc)|E = 0 so (τc)|E = u (E)x for some x H|c|d(B; Q). -
exsh3.dvi
https://www.dpmms.cam.ac.uk/study/II/AutomataAndFormalLanguages/2021-2022/2122autflno3.pdf10 Nov 2021: a) All words w {0, 1} consisting of either the string 01 repeated some number oftimes (possibly none), or the string 010 repeated some number of times (possiblynone). ... b) All words w {a, b, c} consisting of some number of a’s (possibly none), -
problemsm3p18
https://www.dpmms.cam.ac.uk/~cmw50/resources/M3P18/FAproblems5.pdf15 Oct 2021: g2Zngv. Show that if 2 D(Rn) with supp K for some compact K Rn then. ... u[] =X. g2Agv[],. for some finite set A Zn which depends only on K. -
Limit Groups, Measure Equivalence and Subgroup Separability Henry…
https://www.dpmms.cam.ac.uk/~hjrw2/Talks/gist.pdf18 Sep 2014: components. Consider a map. : 1()! Z=pZ. for some prime p that maps all the boundary. ... If G F and H G then H is. measure-equivalent to some free group. -
filtersurprise.dvi
https://www.dpmms.cam.ac.uk/~ik355/PAPERS/filtering.pdf5 Jun 2020: This makes a direct comparison possible and enables us topresent some theoretical results. ... There exists some number K such that k(n) < K for all n. -
Lent Term 2016 O. Randal-Williams IB Groups, Rings, and ...
https://www.dpmms.cam.ac.uk/~or257/teaching/IBGRM/Sheet3.pdf15 Feb 2016: 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. -
Michaelmas Term 2003 J. M. E. Hyland Linear Algebra: ...
https://www.dpmms.cam.ac.uk/~jmeh1/Teaching/2ndla03.pdf12 Aug 2008: vary in difficulty but cover some instructive points. 1. For what values of a and b does the system of simultaneous linear equations. ... What are the eigenvalues and eigenvectors?Show that if an endomorphism β of V commutes with α then β = p(α) for -
REMARKS ON GLUING PUNCTURED LOGARITHMIC MAPS MARK GROSS Abstract. ...
https://www.dpmms.cam.ac.uk/~mg475/gluing.pdf6 Mar 2023: The results of4 then apply to give us some information about the natural map φ′ : M (X/B, τ ) M sch(X/B, τ ). Unfortunately, in general it is difficult to ... 1We recall that H2(X) represents some choice of group of curve classes. -
ANALYSIS I EXAMPLES 2 G.P. Paternain Lent 2022 Comments ...
https://www.dpmms.cam.ac.uk/study/IA/AnalysisI/2021-2022/aI_2_22.pdf22 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. -
QUASIRANDOM GROUPS W. T. Gowers Abstract. Babai and Sos ...
https://www.dpmms.cam.ac.uk/~wtg10/quasirandomgroups.pdf22 Oct 2006: The proof has three stages. First, we briefly review some facts about quasirandom. ... As promised, let us briefly review some of the standard theory of quasirandomness,. -
Example sheet 4, Galois Theory, 2007. 1. (i) Let ...
https://www.dpmms.cam.ac.uk/study/II/Galois/2007-2008/ex4.pdf4 Feb 2008: 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.
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