4,422
edits
Continuous Time Random Walk: Difference between revisions
Jump to navigation
Jump to search
→Fractional Differential Equations
| Line 45: | Line 45: | ||
In order to proceed, it is necessary to make an assumption regarding the shape of the distributions appearing in the kernel ''K''. Invoking the Generalized Limit Theorem for the sums of random variables, | In order to proceed, it is necessary to make an assumption regarding the shape of the distributions appearing in the kernel ''K''. Invoking the Generalized Limit Theorem for the sums of random variables, | ||
<ref>B. V. Gnedenko and A. N. Kolmogorov, ''Limit Distributions | <ref>B. V. Gnedenko and A. N. Kolmogorov, ''Limit Distributions of Sums of Independent Random Variables'', Addison-Wesley, Reading, MA (1954)</ref> | ||
these distributions are taken to be Lévy distributions. This choice allows modelling both | these distributions are taken to be Lévy distributions. This choice allows modelling both | ||
[[Non-diffusive transport|sub- and super-diffusive transport]], and in the appropriate limit, standard ("Fickian") transport is recovered. | [[Non-diffusive transport|sub- and super-diffusive transport]], and in the appropriate limit, standard ("Fickian") transport is recovered. | ||