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Articles 91 - 102 of 102
Full-Text Articles in Physical Sciences and Mathematics
Mathematical Constance (A Poem Dedicated To Constance Reid), Arthur T. Benjamin
Mathematical Constance (A Poem Dedicated To Constance Reid), Arthur T. Benjamin
All HMC Faculty Publications and Research
Mathematical Constance (A Poem Dedicated to Constance Reid)
I think that I shall never see
A constant lovelier than e,
Whose digits are too great too state,
They're 2.71828…
And e has such amazing features
It's loved by all (but mostly teachers).
With all of e's great properties
Most integrals are done with … ease.
Theorems are proved by fools like me
But only Euler could make an e.
I suppose, though, if I had to try
To choose another constant, I
Might offer i or phi or pi.
But none of those would satisfy.
Of all the …
The Best Way To Knock 'M Down, Arthur T. Benjamin, Matthew T. Fluet '99
The Best Way To Knock 'M Down, Arthur T. Benjamin, Matthew T. Fluet '99
All HMC Faculty Publications and Research
"Knock 'm Down" is a game of dice that is so easy to learn that it is being played in classrooms around the world. Although this game has been effective at developing students' intuition about probability [Fendel et al. 1997; Hunt 1998], we will show that lurking underneath this deceptively simple game are many surprising and highly unintuitive results.
Bounds On A Bug, Arthur T. Benjamin, Matthew T. Fluet '99
Bounds On A Bug, Arthur T. Benjamin, Matthew T. Fluet '99
All HMC Faculty Publications and Research
In the game of Cootie, players race to construct a "cootie bug" by rolling a die to collect component parts. Each cootie bug is composed of a body, a head, two eyes, one nose, two antennae, and six legs. Players must first acquire the body of the bug by rolling a 1. Next, they must roll a 2 to add the head to the body. Once the body and head are both in place, the remaining body parts can be obtained in any order by rolling two 3s for the eyes, one 4 for the nose, two 5s for the …
Sensible Rules For Remembering Duals -- The S-O-B Method, Arthur T. Benjamin
Sensible Rules For Remembering Duals -- The S-O-B Method, Arthur T. Benjamin
All HMC Faculty Publications and Research
We present a natural motivation and simple mnemonic for creating the dual LP of any linear programing problem.
Optimal Klappenspiel, Arthur T. Benjamin, Derek Stanford '93
Optimal Klappenspiel, Arthur T. Benjamin, Derek Stanford '93
All HMC Faculty Publications and Research
The game Klappenspiel ("flipping game") is a traditional German game of flipping tiles according to dice rolls. In this paper, we derive the optimal strategy for this game by using dynamic programming. We show that the probability of winning using the optimal strategy is 0.30%.
The Centrality Of Mathematics In The History Of Western Thought, Judith V. Grabiner
The Centrality Of Mathematics In The History Of Western Thought, Judith V. Grabiner
Pitzer Faculty Publications and Research
This article explores the interplay of mathematics and philosophy in Western thought as well as applications to other fields.
The Changing Concept Of Change: The Derivative From Fermat To Weierstrass, Judith V. Grabiner
The Changing Concept Of Change: The Derivative From Fermat To Weierstrass, Judith V. Grabiner
Pitzer Faculty Publications and Research
Historically speaking, there were four steps in the development of today's concept of the derivative, which I list here in chronological order. The derivative was first used; it was then discovered; it was then explored and developed; and it was finally defined. That is, examples of what we now recognize as derivatives first were used on an ad hoc basis in solving particular problems; then the general concept lying behind them these uses was identified (as part of the invention of calculus); then many properties of the derivative were explained and developed in applications both to …
On Multiple Solutions Of Nonlinear Elliptic Equations With Odd Nonlinearities, Alfonso Castro, J. V. A. Gonçalves
On Multiple Solutions Of Nonlinear Elliptic Equations With Odd Nonlinearities, Alfonso Castro, J. V. A. Gonçalves
All HMC Faculty Publications and Research
In this paper we stablish results on multiplicity of solutions for the boundary value problem where a e IR and f: R - IR is an odd continuous function.
Mathematics In America: The First Hundred Years, Judith V. Grabiner
Mathematics In America: The First Hundred Years, Judith V. Grabiner
Pitzer Faculty Publications and Research
There are two main questions I shall discuss in this paper. First, why was American mathematics so weak from 1776 to 1876? Second, and much more important, how did what happened from 1776-1876 produce an American mathematics respectable by international standards by the end of the nineteenth century? We will see that the "weakness" -at least as measured by the paucity of great names- co-existed with the active building both of mathematics education and of a mathematical community which reached maturity in the 1890's.
Multiplicatively Periodic Rings, Ted Chinburg, Melvin Henriksen
Multiplicatively Periodic Rings, Ted Chinburg, Melvin Henriksen
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We prove a generalization of Luh's result without using Dirichlet's Theorem. We then use Theorem 1 to show that the J-subrings of a periodic ring form a lattice with respect to join and intersection (the join of two subrings is the smallest subring containing both of them). After noting that every J-ring has nonzero characteristic, we determine for which positive integers n and m there exist J-rings of period n and characteristic m. This generalizes a problem posed by G. Wene.
Is Mathematical Truth Time-Dependent?, Judith V. Grabiner
Is Mathematical Truth Time-Dependent?, Judith V. Grabiner
Pitzer Faculty Publications and Research
Another such mathematical revolution occurred between the eighteenth and nineteenth centuries, and was focused primarily on the calculus. This change was a rejection of the mathematics of powerful techniques and novel results in favor of the mathematics of clear definitions and rigorous proofs. Because this change, however important it may have been for mathematicians themselves, is not often discussed by historians and philosophers, its revolutionary character is not widely understood. In this paper, I shall first try to show that this major change did occur. Then, I shall investigate what brought it about. Once we have done this, we can …
Calculus And The Computer: A Conservative Approach, Melvin Henriksen
Calculus And The Computer: A Conservative Approach, Melvin Henriksen
All HMC Faculty Publications and Research
This paper describes a program for making the use of numerical methods an integral part of the freshman college course in single variable calculus.