Advances in Discrete Differential Geometry - download pdf or read online

By Alexander I. Bobenko (eds.)

ISBN-10: 3662504464

ISBN-13: 9783662504468

ISBN-10: 3662504472

ISBN-13: 9783662504475

This is without doubt one of the first books on a newly rising box of discrete differential geometry and a very good option to entry this interesting sector. It surveys the attention-grabbing connections among discrete types in differential geometry and intricate research, integrable structures and functions in laptop graphics.

The authors take a better examine discrete versions in differential

geometry and dynamical structures. Their curves are polygonal, surfaces

are made of triangles and quadrilaterals, and time is discrete.

Nevertheless, the variation among the corresponding delicate curves,

surfaces and classical dynamical platforms with non-stop time can hardly ever be obvious. this is often the paradigm of structure-preserving discretizations. present advances during this box are prompted to a wide volume via its relevance for special effects and mathematical physics. This booklet is written through experts operating jointly on a typical examine undertaking. it's approximately differential geometry and dynamical platforms, soft and discrete theories, and on natural arithmetic and its sensible functions. The interplay of those features is tested through concrete examples, together with discrete conformal mappings, discrete advanced research, discrete curvatures and exact surfaces, discrete integrable structures, conformal texture mappings in special effects, and free-form architecture.

This richly illustrated ebook will persuade readers that this new department of arithmetic is either appealing and valuable. it is going to entice graduate scholars and researchers in differential geometry, complicated research, mathematical physics, numerical equipment, discrete geometry, in addition to special effects and geometry processing.

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Sample text

2, we discuss a discrete version of the Riemann mapping problem for quadrangulations. 1 Emerging Circle Patterns and a Necessary Condition Consider the two discrete conformal maps shown in the two rows of Fig. 6. The domains (shown left) are a square and a rectangle, subdivided into 6 × 6 and 6 × 5 squares, respectively. 1 by minimizing E euc as explained in Sect. 3, prescribing boundary angles to obtain maps to parallelograms: Θ = 50◦ and 130◦ for the corner vertices, Θ = 180◦ for the other boundary vertices, and Θ = 360◦ for interior vertices.

333(3), 239–244 (2001) 41. : Conformal invariance in random cluster models. I. Holomorphic fermions in the Ising model. Ann. Math. (2) 172(2), 1435–1467 (2010) 42. : Discrete complex analysis and probability. In: Proceedings of the International Congress of Mathematicians 2010 (ICM 2010), vol. I: Plenary Lectures and Ceremonies, vols. II-IV: Invited Lectures, pp. 595–621. Hyderabad, India (2010) 43. : A unique representation of polyhedral types. Centering via Möbius transformations. Math. Z. 249(3), 513–517 (2005) 44.

Bobenko et al. Figure 26 shows an example of the Fuchsian uniformization of a genus three surface presented by its Schottky uniformization. Tori given by Schottky data. For tori, the Schottky data consist of one generator σ (z) − A z−A =μ σ (z) − B z−B (65) and one pair of circles. To find a uniformization C/ is elementary. It suffices to consider the case where A = B = 0 (and C, C are concentric circles around 0 with radii i and μ. Figure 27 shows two examples where we apply the discrete method without adding extra points inside the fundamental domain of the Schottky group.

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Advances in Discrete Differential Geometry by Alexander I. Bobenko (eds.)

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