# user58533

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Trying to learn math :)

# 36 Posts

 Sep21 asked How many solutions does the equation $2i+j+3k=l$ have in nonnegative integers? Sep21 asked Question about eigenvalue problem of a selfadjoint operator. Sep18 answered critical points, differential equation Sep15 answered Stability analysis for a system of two differential equations Sep4 asked self-adjoint operator without eigenvalues? Aug23 answered Every solution of the system is attracted to the center manifold Aug8 answered Unique solution to a arbitrary non-linear system under monotonicity assumptions Aug2 answered Stable manifold for bidimensional nonlinear dynamic system with complex eigenvalues Jul29 asked Doubt with smooth extensions Jul27 asked Help with operator $f(x^q)=\frac{1}{q+1}x^q$. Jul24 asked Help with function $f_r(x^q)=q^rx^{q-1}$ Jun9 answered Is $\gamma(t) = \left( A \cos(\sqrt{a} t),B \cos \! \left( \sqrt{b} t \right) \right)$ dense in the rectangle $[- A,A] \times [- B,B]$? Apr30 answered derive an equation for this mass spring damper Apr19 answered near identity change of coordinates Apr11 answered Help Finding Saddle Connections of a System Apr11 answered 2nd order linear differential equation Apr10 answered Find values of the parameters in Predator prey model Mar18 answered Topological conjugation between two flows Mar11 answered Consider the system $x'= \frac{-x}{2}; y' = 2y + x^2$ to solve the system and find topologically conjugacy and show topologically conjugate Feb6 answered Explicit topological conjugation between two ODEs