Up until recently, Riemannian geometry and basic topology were not included, even by departments or faculties of mathematics, as compulsory subjects in a university-level mathematical education. The standard courses in the classical differential geometry of curves and surfaces which were given instead (and still are given in some places) have come gradually to be viewed as anachronisms. However, there has been hitherto no unanimous agreement as to exactly how such courses should be brought up to date, that is to say, which parts of modern geometry should be regarded as absolutely essential to a modern mathematical education, and what might be the appropriate level of abstractness of their exposition. The task of designing a modernized course in geometry was begun in 1971 in the mechanics division of the Faculty of Mechanics and Mathematics of Moscow State University. The subject-matter and level of abstractness of its exposition were dictated by the view that, in addition to the geometry of curves and surfaces, the following topics are certainly useful in the various areas of application of mathematics (especially in elasticity and relativity, to name but two), and are therefore essential: the theory of tensors (including covariant differentiation of them); Riemannian curvature; geodesics and the calculus of variations (including the conservation laws and Hamiltonian formalism); the particular case of skew-symmetric tensors (i. e.
Michael LaFosse is an acknowledged master of the paper-folding arts, but his origami butterflies have won him special acclaim. Hundreds of LaFosse's winged creations are featured in exhibitions around the world, and his iconic butterfly designs are admired by origami enthusiasts everywhere. In this collection, LaFosse presents six exclusive, all-new butterfly designs specifically created with the paper crafts novice in mind. This fun and instructive origami kit will kickstart your creativity with: 6 gorgeous butterfly designs, including 'A Butterfly for George Morkiami' and 'A Butterfly for Reiko'A 32-page booklet, featuring full-color, step-by-step instructions and easy-to-follow origami diagrams40 brilliant, full-color, 5-inch folding papersAn instructional DVD with more than an hour of video lessons taught by LaFosse himself.
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Thrill, Motivate, Organise, Design