Root494 发表于 2025-3-28 14:48:57
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,Riemann (1826–1866),Like Mozart’s, Bernhard Riemann’s life was short but marvelously creative. He solved several of the most difficult problems in pure and applied mathematics, introduced entirely new concepts and techniques, and profoundly changed the way in which mathematicians, physicists, and philosophers view space.打折 发表于 2025-3-29 12:50:09
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The Evolution of Geometry,es give rise. Modem geometry is an extremely active field of research by pure and applied mathematicians, and it also has significant applications in physics and engineering. In the present book, we will explore in a physical manner the geometrical properties of curves and surfaces, and will discussinterior 发表于 2025-3-29 23:44:57
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Curves,ew of the infinite variety of curves that can be imagined. The path of a bird flying through the air, the instantaneous shape of a swinging chain held at its top, the outlines of petals, the forms of arches and suspension bridges-all provide physical examples of curves. We wish to describe such genemacular-edema 发表于 2025-3-30 05:22:59
Arc Length,ral curve. In other words, the Greek mathematicians were unable to put into mathematical language an idea that every ancient rope-stretcher and tailor must have known! To understand the nature of the difficulty, let us start with an experiment.