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The Math Community Forum ( formerly called Math 2000 Colloquium Series ) presents lectures on subjects , such as current teaching trends , for all those interested in improving the mathematics community both inside OSU and throughout the State of Ohio . Just like telemarketer calls at home and credit card offers in the mail , you're bound to eventually get junk mail in your email . These courses are accelerated , more concept-oriented versions of the regular sequences designed to challenge the well-prepared , highly motivated student , not necessarily a math major . " Like many offices , we worried about a pen-pal syndrome , but that has n't been the case at all , " he said . Those statements seem clear , and are often used as first steps in proving more advanced results ( like Euler 's formula ) . So if you come across a nath course that is n't your favorite , but there are others that you really like , it just means that you are getting to know math better and your taste is becoming more refined . In the talk I will give some examples / understanding / visualizations of what a generalized 3-dim space can look like ( aka a 3-manifold ) , and how one can distinguish these hard to imagine spaces . The movie illustrates an amazing mathematical discovery made in 1957 : you can turn the surface of a sphere inside out without making a hole , if you think of the surface as being made of an elastic material that can pass through itself . Go to the health center if you are n't better in a day . Abstract : A polygon in the plane that has no self-crossings separates the plane into three parts : inside , on , and outside the curve . We will describe a quick and easy way to represent ( and simultaneously " construct " ) piecewise linear functions on the plane . ' " Her husband only regretted that most of his 30-year work was - - and still is - - highly classified , so he could n't open that part of his life to his wife . The latter recognition was achieved through nomination by a panel of 55 highly respected members of the scientific community.Hans Zassenhaus , professor emeritus , continues to receive honors .