| 1. | Where \ delta ( t ) is the Dirac delta function.
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| 2. | Where is the ordinary one-dimensional Dirac delta function.
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| 3. | The Dirac delta function can be rigorously defined either as a measure.
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| 4. | For example it is not meaningful to square the Dirac delta function.
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| 5. | Examples include states whose wavefunctions are Dirac delta functions or infinite plane waves.
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| 6. | The superscript 2 indicates that the Dirac delta function is in two dimensions.
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| 7. | The residence time distribution function is therefore a dirac delta function at \ tau.
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| 8. | Where \ delta is the Dirac delta function.
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| 9. | Thus, the power spectral density function is a set of Dirac delta functions.
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| 10. | Under certain conditions, the Kronecker delta can arise from sampling a Dirac delta function.
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