# Tagged Questions

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### Solutions to problems in the ODE book by Gerald Teschl

I am self learning ODE by the book: Ordinary Differential Equations and Dynamical Systems by Gerald Teschl. Anyone knows where I can solutions to the problems given in this book? Thank you.
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### Book suggestion for practicing tough Ordinary DE problems

I am preparing myself for a post undergraduate (masters) entrance exam in mathematics. Can someone suggest a really good practice material with challenging questions of all types for ordinary ...
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### Book for asymptotic behavior of an ODE

I want a good book to master the concepts of limit point, equilibrium point, stability (lyapunov, global, local etc.). I am aware of real analysis. Not aware of ODE.
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### Integrability of 1-forms and Stokes' Theorem

Let $\alpha$ be a $1$-form defined on a manifold $M$ and $\Delta = ker (\alpha)$. The classical theorem of Frobenius says that $\Delta$ is integrable if $\alpha \wedge d\alpha =0$ i.e if $d\alpha$ is ...
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### Derivation of Schrödinger's equation

I recall a famous quote of the late physicist Richard Feynman: Where did we get that from? It's not possible to derive it from anything you know. It came out of the mind of Schrödinger. This ...
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### Insightful books on differential equations?

What are some recommendations for insightful books on differential equations and difference equations? These books don't need to be in the format of a textbook, and don't need to provide the same ...
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### What are the complex solutions of a linear homogenous ODE of order $n$ with constant coefficients?

What are the complex solutions of a linear homogenous ODE of order $n$ with constant coefficients? Where can I read a proof? p.s. I don't even see the answer to the first question with a google ...
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### Reference Request for Linear ODEs

Homogeneous, linear ODEs of the form $$\mathrm{f}^{(n)}(x)+a_{n-1}\mathrm{f}^{(n-1)}(x)+\cdots+a_1\mathrm{f}'(x)+a_0\mathrm{f}(x)=0$$ where each $a_i \in \mathbb{R}$ are known to have "solution ...