Generalized functions and weak derivatives - A very brief introduction
MathVlix
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Generalized functions and weak derivatives - A very brief introduction
1 491 просмотр · 2 г. назад
MathVlix
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1 491 просмотр · 2 г. назад
This video gives a brief introduction into the ideas underlying generalized functions (aka distributions) and the weak derivatives we can take of them. The emphasis is on working out the ideas rather than mathematical rigor and generality.
Sections
00:00 Greetings
03:06 1. Test functions and generalized functions
05:47 The space T* of generalized functions (distributions)
06:31 Embedding continuous functions in the dual space of the test functions
08:51 2. Weak derivatives
11:38 Weak derivatives for non-differentiable functions and linear functionals
13:42 3. Examples
14:02 Absolute value
18:21 Heaviside function
22:06 Dirac distribution
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