Derek O'Connor

365 reputation

Retired university lecturer at University College, Dublin. Taught numerical analysis and algorithms & data structures.

Worked as an electrical engineer for Westinghouse, Pittsburgh, PA, 1968-1972.

Now living in a small village in West Wicklow which has 2 pubs, 2 churches, 1 shop, and thousands of sheep. Baa, Baa, Bah! Humbug?

	365 reputation	bio	website	derekroconnor.net	visits	member for	1 year, 9 months
18 badges		location	Donard, Co. Wicklow, Ireland		seen	Feb 23 at 16:09

8 Answers

votes activity newest

4	What is the expected value of the number of die rolls necessary to get a specific number?
3	How can I find the square root using pen and paper?
3	How does one compute the sign of a permutation?
1	Random Sequence Generator function
1	computing determinant of a matrix

+20	How can I find the square root using pen and paper?
+20	What is the expected value of the number of die rolls necessary to get a specific number?
+10	Random Sequence Generator function
+5	Is there an $O(n^2)$ test to determine if an $n \times n$ Boolean matrix $B$ has an inverse?

votes activity newest

7	Sum of powers-of-integers bound
6	Is there an $O(n^2)$ test to determine if an $n \times n$ Boolean matrix $B$ has an inverse?
4	A Proof of Correctness of Durstenfeld's Random Permutation Algorithm
4	Asymptotic Approximation for a Derangement Algorithm
3	Minimize Expected Value

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