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mathbabe.org | ||
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kpknudson.com
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| | | | | [AI summary] A mathematician connects Franz Kafka's theme of 'non-arrival' and infinite paradoxes to Georg Cantor's work on different levels of transfinite infinity and the diagonalization argument. | |
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thatsmaths.com
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| | | | | The numbers are usually studied in layers of increasing subtlety and intricacy. We start with the natural, or counting, numbers $latex {\mathbb{N} = \{ 1, 2, 3, \dots \}}&fg=000000$. Then come the whole numbers or integers, $latex {\mathbb{Z} = \{ \dots, -2, -1, 0, 1, 2, \dots \}}&fg=000000$. All the ratios of these (avoiding division... | |
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fabricebaudoin.blog
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| | | | | Let $latex x\in C^{1-var} ([0,T], \mathbb{R}^d)$ and let $latex V : \mathbb{R}^e \to \mathbb{R}^{e\times d} $ be a Lipschitz continuous map. In order to analyse the solution of the differential equation, $latex y(t)=y_0+\int_0^t V(y(s)) dx(s),$ and make the geometry enter into the scene, it is convenient to see $latex V$ as a collection of vector... | |
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nhigham.com
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| | | A companion matrix $latex C\in\mathbb{C}^{n\times n}$ is an upper Hessenberg matrix of the form $latex \notag C = \begin{bmatrix} a_{n-1} & a_{n-2} & \dots &\dots & a_0 \\ 1 & 0 & \dots &\dots & 0 \\ 0 & 1 & \ddots & & \vdots \\ \vdots & & \ddots & 0 & 0 \\... | ||
