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visits member for 1 year, 8 months
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Trying to learn math :)


Sep
21
asked How many solutions does the equation $2i+j+3k=l$ have in nonnegative integers?
Sep
21
asked Question about eigenvalue problem of a selfadjoint operator.
Sep
18
answered critical points, differential equation
Sep
15
answered Stability analysis for a system of two differential equations
Sep
4
asked self-adjoint operator without eigenvalues?
Aug
23
answered Every solution of the system is attracted to the center manifold
Aug
8
answered Unique solution to a arbitrary non-linear system under monotonicity assumptions
Aug
2
answered Stable manifold for bidimensional nonlinear dynamic system with complex eigenvalues
Jul
29
asked Doubt with smooth extensions
Jul
27
asked Help with operator $f(x^q)=\frac{1}{q+1}x^q$.
Jul
24
asked Help with function $f_r(x^q)=q^rx^{q-1}$
Jun
9
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] $?
Apr
30
answered derive an equation for this mass spring damper
Apr
19
answered near identity change of coordinates
Apr
11
answered Help Finding Saddle Connections of a System
Apr
11
answered 2nd order linear differential equation
Apr
10
answered Find values of the parameters in Predator prey model
Mar
18
answered Topological conjugation between two flows
Mar
11
answered Consider the system $x'= \frac{-x}{2}; y' = 2y + x^2 $ to solve the system and find topologically conjugacy and show topologically conjugate
Feb
6
answered Explicit topological conjugation between two ODEs