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Map projections are differentiable transformations from one familiar mathematical surface ( a sphere or ellipsoid ) to another ( a plane , cone , or cylinder ) . One of these includes an introduction to numerical analysis using pocket-size computers or programmable calculators . WantedAnecdotes concerning the department or the individuals who have lived and worked here in years past and present are requested We invite you to share your stories with us - - no exaggerations please , truthful accounts From the returns received our editorial panel will select those it finds most interesting or amusing for publication in future issues of Math Matrix . They want to know what their representative is doing , how they vote , and where to go when they have a question or problem that needs resolution . Theodorus was telling us about square roots of 3 and of 5 , and showed us that these were not rational ; and he continued on with each case in turn until he got to the square root of 17 , where for some reason he got stuck . And when he came to the quiet little meetings in his house he was prepared to surrender himself entirely . He knew that he would have to walk alone through the chancel , and he dreaded showing his limp thus obviously , not only to the whole school , who were attending the service , but also to the strangers , people from the city or parents who had come to see their sons confirmed . He earned his doctorate at Cornell University and was a charter member and founder of the American Mathematical Society . He hated Rose now , he wanted to hurt him , he thought of biting things he might have said to him . But when the time came he felt suddenly that he could accept the humiliation joyfully ; and as he limped up the chancel , very small and insignificant beneath the lofty vaulting of the Cathedral , he offered consciously his deformity as a sacrifice to the God who loved him . Consider it an indispensable tool for those who want to govern in the 21st Century . Of course , you have to study before that , or it does n't do any good . He had no patience with fools , but was willing to take much trouble with boys whom he suspected of concealing intelligence behind their wilfulness . He was developing a sense of humour , and found that he had a knack of saying bitter things , which caught people on the raw ; he said them because they amused him , hardly realising how much they hurt , and was much offended when he found that his victims regarded him with active dislike .