Question

How to upper-bound $\sum_{i=1}^n \frac{s_i}{i + \sqrt{s_i}}$ and $\sum_{i=1}^n \frac{s_i}{i + {s_i}}$?

score 28 · Answer 1 · 2015-11-09 21:34:31

28

Views

How to upper-bound $\sum_{i=1}^n \frac{s_i}{i + \sqrt{s_i}}$ and $\sum_{i=1}^n \frac{s_i}{i + {s_i}}$?

Published on 09 Nov 2015 - 21:34

score 299 · Answer 2 · 2015-11-09 21:56:23

299

Views

Is it true that $ \sum_{t = 1}^T \frac{T-t}{ t+ \sqrt{T-t}} \in O(T) $?

Published on 09 Nov 2015 - 21:56

score 25 · Answer 3 · 2015-11-10 09:22:12

25

Views

Is it true that $ \sum_{i=1}^n \frac{s_i}{i + \sqrt{s_i}} = O( \sqrt{\sum_{i=1}^n s_i} \log n ) $?

Published on 10 Nov 2015 - 9:22

score 63 · Answer 4 · 2026-03-04 01:26:06

63

Views

Estimating the parameters of stochastic asset price models using Matlab

Published on 04 Mar 2026 - 1:26

score 51 · Answer 5 · 2015-11-13 08:51:59

How to prove/disprove $ \sum_{i=1}^{n} \frac{a_i}{ \sum_{j=1}^{i} a_j } \approx \log \sum_{i=1}^{n} a_i, \quad a_i \in \mathbb{N}^+ $?

score 6.3k · Answer 6 · 2015-11-16 04:14:12

6.3k

Views

What is a causal process in time series analysis?

Published on 16 Nov 2015 - 4:14

score 26 · Answer 7 · 2015-11-16 09:50:22

26

Views

Is $\sum ^ \infty _{j=0} \psi_j <\ \infty $ a correct use of notation?

Published on 16 Nov 2015 - 9:50

score 88 · Answer 8 · 2015-11-18 17:45:39

88

Views

Describing a linear predictor for a stationary process with a set of equations

Published on 18 Nov 2015 - 17:45

score 95 · Answer 9 · 2015-11-19 13:09:09

95

Views

upper bound $\sum_{i=1}^n a_i (a_i-1)/2$ using a function of $\sum_{i=1}^n a_i$

Published on 19 Nov 2015 - 13:09

score 43 · Answer 10 · 2015-11-19 21:59:05

43

Views

Generating stochastic processes from distributions of random variables

Published on 19 Nov 2015 - 21:59

score 63 · Answer 11 · 2015-11-27 02:06:01

63

Views

How do you make a single time series from 3 separate non overlapping time series in R?

Published on 27 Nov 2015 - 2:06

score 135 · Answer 12 · 2015-11-27 03:47:51

135

Views

Covariance formula to find $\sigma(1)$

Published on 27 Nov 2015 - 3:47

score 94 · Answer 13 · 2015-12-03 10:47:44

94

Views

Independence of time series data

Published on 03 Dec 2015 - 10:47

score 30 · Answer 14 · 2015-12-06 07:57:42

30

Views

Is it true that $\sum_{i=1}^n \log (n/i) = o(n)$?

Published on 06 Dec 2015 - 7:57

score 204 · Answer 15 · 2015-12-09 22:18:48

204

Views

Predicting trends of timeseries data with ARIMA

Published on 09 Dec 2015 - 22:18

List Question

How to upper-bound $\sum_{i=1}^n \frac{s_i}{i + \sqrt{s_i}}$ and $\sum_{i=1}^n \frac{s_i}{i + {s_i}}$?

Is it true that $ \sum_{t = 1}^T \frac{T-t}{ t+ \sqrt{T-t}} \in O(T) $?

Is it true that $ \sum_{i=1}^n \frac{s_i}{i + \sqrt{s_i}} = O( \sqrt{\sum_{i=1}^n s_i} \log n ) $?

Estimating the parameters of stochastic asset price models using Matlab

How to prove/disprove $ \sum_{i=1}^{n} \frac{a_i}{ \sum_{j=1}^{i} a_j } \approx \log \sum_{i=1}^{n} a_i, \quad a_i \in \mathbb{N}^+ $?

What is a causal process in time series analysis?

Is $\sum ^ \infty _{j=0} \psi_j <\ \infty $ a correct use of notation?

Describing a linear predictor for a stationary process with a set of equations

upper bound $\sum_{i=1}^n a_i (a_i-1)/2$ using a function of $\sum_{i=1}^n a_i$

Generating stochastic processes from distributions of random variables

How do you make a single time series from 3 separate non overlapping time series in R?

Covariance formula to find $\sigma(1)$

Independence of time series data

Is it true that $\sum_{i=1}^n \log (n/i) = o(n)$?

Predicting trends of timeseries data with ARIMA

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