【预订】An Inverse Spectral Problem Related to the Geng-Xue Two- 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9781470420260 Author 作者 Hans Lundmark Format 版本 平装-胶订 Pages Number 页数 87页 Publisher 出版社 American Mathematical Society (AMS) Publication Date 出版日期 2016-10-05 Language 语种 英语 Book Contents 内容简介 The authors solve a spectral and an inverse spectral problem arising in the computation of peakon solutions to the two-component PDE derived by Geng and Xue as a generalization of the Novikov and Degasperis-Procesi equations. Like the spectral problems for those equations, this one is of a ``discrete cubic string’’ type--a nonselfadjoint generalization of a classical inhomogeneous string--but presents some interesting novel features: there are two Lax pairs, both of which contribute to the correct complete spectral data, and the solution to the inverse problem can be expressed using quantities related to Cauchy biorthogonal polynomials with two diff
¥641.00
【预订】99 Points of Intersection 9780883855539 美国库房发货，通常付款后3-5周到货！
Product Details 基本信息 ISBN-13 书号 9780883855539 Author 作者 Hans Walser Format 版本 精装 Pages Number 页数 168页 Publisher 出版社 American Mathematical Society (AMS) Publication Date 出版日期 2006-12-31 Shipping Weight 商品重量 357g Language 语种 英语 Book Contents 内容简介 The 99 points of intersection presented here were collected during a year-long search for surprising concurrence of lines. For each example we find compelling evidence for the sometimes startling fact that in a geometric figure three straight lines, or sometimes circles, pass through one and the same point. Of course, we are familiar with some examples of this from basic elementary geometry - the intersection of medians, altitudes, angle bisectors, and perpendicular bisectors of sides of a triangle. Here there are many more examples - some for figures other than triangles, some where even more than three straight lines pa
¥610.00
