Let R have its usual topology and let X = {a,b, c}. Define f : R –→ X by а, х<1 f(x) = b, x = с, x >
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- 1. a) Let (x, d) be a metric space. Define a flow on (x, d). b) Let (x, {phi_t}) be a flow on a metric space x. what is x0 in x a fixed point of the flow? c) When do you say that a fixed point x0 in x is Poincare stable? d) When do you say that a fixed point x0 is Lyapunov stable? Use Analysis to complete the following statements.The main point of this exercise is to use Green’s Theorem to deduce a specialcase of the change of variable formula. Let U, V ⊆ R2 be path connected open sets and letG : U → V be one-to-one and C2such that the derivate DG(u) is invertible for all u ∈ U.Let T ⊆ U be a regular region with piecewise smooth boundary, and let S = G(T). Answer CFind the image of the semi-infinite strip x ≥ 0, 0 ≤ y ≤ π under the transformation w = exp z, and label corresponding portions of the boundaries.
- Give an example of a set X and topologies T1 and T2 on X such that T1 union T2 is not a topology on XLet V be an inner product space, and let y, z ∈V. Define T: V →V by T(x) = <x, y>z for all x ∈V. First prove that T is linear. Then show that T∗exists, and find an explicit expression for it.1. a) Let (x, d) be a metric space. Define a flow on (x, d). b) Let (x, {ϕt}) be a flow on a metric space X. When is xo in x a fixed point of the flow? c) When do you say that a fixed point xo in x is Poincare stable? d) When do you say that a fixed point xo is Lypanov stable?
- The main point of this exercise is to use Green’s Theorem to deduce a specialcase of the change of variable formula. Let U, V ⊆ R2 be path connected open sets and letG : U → V be one-to-one and C2such that the derivate DG(u) is invertible for all u ∈ U.Let T ⊆ U be a regular region with piecewise smooth boundary, and let S = G(T). Solve A B CLet fg,:I→R2 begivenbyf(x) = (0, x), g(x) = (1, x). a. Specify a homotopy h:I × I→R2 from f to g. b. Specify a homotopy h:I × I→R2 from g to f.find the linearization L(x) of ƒ(x) at x = a. ƒ(x) = tan x, a = π