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Mathematics
hydrologist's user avatar
hydrologist's user avatar
hydrologist's user avatar
hydrologist
  • Member for 10 years, 1 month
  • Last seen more than a month ago
  • Bristol, UK
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I'm an Engineer, usually trying to develop and/or adapt deterministic and statistical techniques to apply to water/environmental data analysis and modelling.

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5
Solutions for $ \int_0^{\infty} \frac{1}{\sqrt{t^3\left(t+\tau\right)^3}}\exp\left[- \frac{2t+\tau}{t\left(t+\tau\right)}\right] \, dt $
Jun 1, 2020
3
General solution for a cascading recurrence relation
Mar 3, 2021
3
General expression for coefficients of power expansion to a power $\left(\sum_{j=0}^\infty (ax)^j\right)^n$
Feb 1, 2023
2
How to solve $\frac{1}{n}\left[1+2\sum_{k=1}^{n-1}\frac{1}{\sqrt{\frac{n}{n-k}}}\right]$
Jun 25, 2014
2
Is there a way to approximate the terms of $\frac{\left(2n\right)!}{\left(2^nn!\right)^2}$ for successive $n$ as $n$ becomes large?
Jun 29, 2020
1
kurtosis of a time series -
Mar 19, 2017
1
Difficult rearrangement of summation terms to find analytical expressions for cumulant functions
Mar 19, 2017
1
Express polynomial coefficients as terms of a matrix determinant or function of matrix determinants
Nov 13, 2020
1
Vieta's formulae - looking for a plain English explanation of the general-case formulae
Dec 15, 2020
1
How to summarise pattern in binomial-type expansion into a single expression
Mar 9, 2021
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15
Autocovariance of an ARMA(2,1) process - derivation of analytical model for $\gamma( k)$
9
Is the square root of a positive semi-definite matrix a unique result?
9
How to create a markov chain with gamma marginal distribution and AR(1) coefficient of $\rho$
5
Autocorrelation function of a triangular wave
5
Find moments of a discrete process using $\mathcal{Z}$-Transform method