- #1

- 307

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to me, the definition of a green function is ugly and singular

we have to deal with functions that are not smooth, e.g., the derivative is not continuous at some point.

How these functions can be useful in math and physics?

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- Thread starter wdlang
- Start date

- #1

- 307

- 0

to me, the definition of a green function is ugly and singular

we have to deal with functions that are not smooth, e.g., the derivative is not continuous at some point.

How these functions can be useful in math and physics?

- #2

- 240

- 2

As to singularities, many times in system analysis, we speak of responses to singular signals which seem more natural to us. But what's better about a step function rather than an impulse function, when one is simply the derivative of the other?

- #3

- 307

- 0

As to singularities, many times in system analysis, we speak of responses to singular signals which seem more natural to us. But what's better about a step function rather than an impulse function, when one is simply the derivative of the other?

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if not an analytical closed-form solution, then at least an integral form which can be approximated.

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the problem is that, we also get an integral equation

the solution is not given explicitly but it depends on itself!

it seems that we can gain nothing by expressing something in terms of itself.

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