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A Practical English Grammar
A clear, comprehensive reference grammar.
A Practical English Grammar for Foreign Students
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
A Practical English Grammar
A clear, comprehensive reference grammar.
Perfect Lattices in Euclidean Spaces
Lattices are discrete subgroups of maximal rank in a Euclidean space. To each such geometrical object, we can attach a canonical sphere packing which, assuming some regularity, has a density. The question of estimating the highest possible density of a sphere packing in a given dimension is a fascinating and difficult problem: the answer is known only up to dimension 3. This book thus discusses a beautiful and central problem in mathematics, which involves geometry, number theory, coding theory and group theory, centering on the study of extreme lattices, i.e. those on which the density attains a local maximum, and on the so-called perfection property. Written by a leader in the field, it is closely related to, though disjoint in content from, the classic book by J.H. Conway and N.J.A. Sloane, Sphere Packings, Lattices and Groups, published in the same series as vol. 290. Every chapter except the first and the last contains numerous exercises. For simplicity those chapters involving heavy computational methods contain only few exercises. It includes appendices on Semi-Simple Algebras and Quaternions and Strongly Perfect Lattices.
Intangible Cultural Heritage Under National and International Law
This illuminating book offers an authoritative analysis of the legal issues relating to safeguarding intangible cultural heritage. Taking a critical approach, it provides a unique insight into the impact of international and national law on the present and future safeguarding processes of intangible cultural heritage. Expert contributors draw on the results of an international study conducted in 26 countries to illustrate how domestic laws comprehend the notion of intangible cultural heritage. The book explores the relationship that these states maintain with the safeguarding of intangible cultural heritage and highlight challenging concepts.
Oxford Pocket English Grammar
A compact reference grammar with exercises.
