Combinatorics | Algebra | Recurrence relations
In mathematics, a recurrence relation is an equation according to which the th term of a sequence of numbers is equal to some combination of the previous terms. Often, only previous terms of the sequence appear in the equation, for a parameter that is independent of ; this number is called the order of the relation. If the values of the first numbers in the sequence have been given, the rest of the sequence can be calculated by repeatedly applying the equation. In linear recurrences, the nth term is equated to a linear function of the previous terms. A famous example is the recurrence for the Fibonacci numbers, where the order is two and the linear function merely adds the two previous terms. This example is a linear recurrence with constant coefficients, because the coefficients of the linear function (1 and 1) are constants that do not depend on . For these recurrences, one can express the general term of the sequence as a closed-form expression of . As well, linear recurrences with polynomial coefficients depending on are also important, because many common elementary and special functions have a Taylor series whose coefficients satisfy such a recurrence relation (see holonomic function). Solving a recurrence relation means obtaining a closed-form solution: a non-recursive function of . The concept of a recurrence relation can be extended to multidimensional arrays, that is, indexed families that are indexed by tuples of natural numbers. (Wikipedia).
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In this video I will show you how to solve a recurrence relation by using the method of backtracking. I hope this video helps someone.
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In this video I go through the steps of solving a recurrence relation using something called backtracking. This is a simple example so if you are new to this it may be useful. This is something you typically see in a discrete math class. I hope this video helps someone:)
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Modeling some of the famous combinatoric questions (Tower of Hanoi, Fibonacci) with recurrence relations. Textbook: Rosen, Discrete Mathematics and Its Applications, 7e Playlist: https://www.youtube.com/playlist?list=PLl-gb0E4MII28GykmtuBXNUNoej-vY5Rz
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From playlist CSE547 - Discrete Mathematics - 1999 SBU
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From playlist CSE547 - Discrete Mathematics - 1999 SBU
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From playlist Discrete Math 2
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