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Classic of science (and mathematical) fiction& charmingly illustrated by author& describes the journeys of A. Square, a resident of Flatland, and his adventures in Spaceland (three dimensions), Lineland (one dimension) and Pointland (no dimensions). A Square also entertains thoughts of visiting a land of four dimensions& a revolutionary idea for which he is banished from Spaceland.

Fourth dimension. --- Time travel --- Fourth dimension --- 514 --- 51 --- Space of more than three dimensions --- Mathematics --- Geometrie --- Mathematica --- Wiskunde --- Geografie --- Sociale en economische geografie --- Algemeen.

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String theory says we live in a ten-dimensional universe, but that only four are accessible to our everyday senses. According to theorists, the missing six are curled up in bizarre structures known as Calabi-Yau manifolds. Here, Shing-Tung Yau, the man who mathematically proved that these manifolds exist, argues that not only is geometry fundamental to string theory, it is also fundamental to the very nature of our universe. Time and again, where Yau has gone, physics has followed. Now for the first time, readers will follow Yau's penetrating thinking on where we've been, and where mathematics will take us next. A fascinating exploration of a world we are only just beginning to grasp, The Shape of Inner Space will change the way we consider the universe on both its grandest and smallest scales.--From publisher description.

Hyperspace --- String models --- Fourth dimension --- Fourth dimension. --- Hyperspace. --- String models. --- Mathematics --- Physical Sciences & Mathematics --- Geometry --- 530.19 --- 512.7 --- Space of more than three dimensions --- Time travel --- Models, String --- String theory --- Nuclear reactions --- Algebraic configurations in hyperspace --- Geometry, Differential --- Geometry, Non-Euclidean --- Space and time --- Fundamental functions in general. Potential. Gradient. Intensity. Capacity etc. --- Algebraic geometry. Commutative rings and algebras --- Foundations --- 530.19 Fundamental functions in general. Potential. Gradient. Intensity. Capacity etc. --- 512.7 Algebraic geometry. Commutative rings and algebras --- Hyperespace --- Modèles des cordes vibrantes (Physique nucléaire) --- Quatrième dimension --- Modèles des cordes vibrantes (Physique nucléaire) --- Quatrième dimension --- Fundamental functions in general. Potential. Gradient. Intensity. Capacity etc