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PERFECT NUMBERS: AN ELEMENTARY INTRODUCTION
ory surrounding even perfect numbers. One would be hard put to find a set of whole numbers with a more fascinating history and more elegant properties surrounded by greater depths of mystery—and more totally useless—than the perfect numbers. —Martin Gardner [2] The number 6 is unique in that 6 = 1+2+3, where 1, 2, and 3 are all of the proper
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x1 x2 + 3x3 = 9 x1 7x2x3 = 2 x 5x = 15 Solution: 4 3 9 x 1 ...
math.dartmouth.eduR 3: −R 2 +R 3 1 0 5 2 0 5 4 1 0 0 0 −12 Since 0 6= −12 we have that b is not a linear combination of a 1, a 2, and a 3. 1.3.26) Let A = 2 0 6 −1 8 5
Negative Power Functions - Dartmouth College
math.dartmouth.eduNegative Power Functions Negative Power Functions and Their Graphs Today we discuss negative power functions. A negative power function is a function of the form f(x) = x¡n, where n is a natural number. We could also write f(x) in the form f(x) = 1
Sandbagging in One-Card Poker - Dartmouth College
math.dartmouth.eduAbstract In 1950, Kuhn developed a simplified version of poker involving two players, three cards, and a maximum win/loss of plus and minus 2. Using basic game theory, he
Galois Theory - Dartmouth College
math.dartmouth.eduGalois and Abel Evariste Galois Niels Henrik Abel Math 31 { Summer 2013 Galois Theory
Absorbing Markov Chains - Dartmouth College
math.dartmouth.eduAbsorbing Markov Chains † A state si of a Markov chain is called absorbing if it is impossible to leave it (i.e., pii = 1). † A Markov chain is absorbing if it has at least one absorbing state, and if from every state it is possible to go to an absorbing state (not necessarily in one step).
1.2. T R T - Mathematics Department : Welcome
math.dartmouth.eduSECTION 1.2 THE REMAINDER THEOREM 11 The Remainder Theorem. Suppose that f is n 1 times differen-tiable and let R n denote the difference between f x and the Taylor polynomial of degreen for f x centered at a. Then R n x f x T n x f n 1 c n 1 ! x a n 1 for some c between a and x.
Division by three
math.dartmouth.eduDivision by three Peter G. Doyle John Horton Conway Version dated 1994 GNU FDLy Abstract We prove without appeal to the Axiom of Choice that for any sets A and B, if there is a one-to-one correspondence between 3 A and 3 B then there is a one-to-one correspondence between A and B.
2.3. GEOMETRIC SERIES - Dartmouth College
math.dartmouth.edu46 CHAPTER 2INFINITE SERIES 2.3. GEOMETRIC SERIES One of the most important typesof infinite series are geometric series. A geometric series is simply the sum of a geometric sequence, n 0 arn. Fortunately, geometric series are also the easiest type of series to analyze.
PI AND ARCHIMEDES POLYGON METHOD - Dartmouth College
math.dartmouth.eduPI AND ARCHIMEDES POLYGON METHOD KYUTAE AULP HAN 1. Introduction Archimedes was not the rst to use a method involving polygons. Other Greek mathematicians before him had attempted to use the area of polygons inside a circle to approximate ˇ. However he was the rst to use the perimeter
The Basics of Multiple Regression
math.dartmouth.eduwhere wages are measured in natural logs. This is a multiple regression model of wages. Because there is more than one explanatory variable, each parameter is interpreted as a partial derivative, or the change in the dependent variable for a change in the explanatory variable, holding all other variables constant. For example,
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Even and Odd Polynomial Functions - University of Waterloo
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