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1. |
Record Nr. |
UNINA9910459262403321 |
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Autore |
Hilton Peter <1923-2010, > |
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Titolo |
A mathematical tapestry : demonstrating the beautiful unity of mathematics / / Peter Hilton, Jean Pedersen ; with illustrations by Sylvie Donmoyer [[electronic resource]] |
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Pubbl/distr/stampa |
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Cambridge : , : Cambridge University Press, , 2010 |
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ISBN |
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1-107-20850-5 |
1-139-63665-0 |
1-282-72342-1 |
9786612723421 |
0-511-77579-2 |
0-511-77655-1 |
0-511-77397-8 |
0-511-77290-4 |
0-511-77700-0 |
0-511-77503-2 |
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Descrizione fisica |
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1 online resource (xv, 290 pages) : digital, PDF file(s) |
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Disciplina |
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Soggetti |
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Mathematics |
Paper work |
Geometrical models |
Polyhedra - Models |
Mathematics - Study and teaching |
Geometry - Study and teaching |
Combinatorial geometry - Study and teaching |
Mathematical recreations |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Title from publisher's bibliographic system (viewed on 05 Oct 2015). |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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Flexagons : a beginning thread -- Another thread : 1-period paper folding -- More paper folding threads : 2-period paper-folding -- A number-theory thread : folding numbers, a number trick, and some titbits -- The polyhedron thread : building some polyhedra and |
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defining a regular polyhedron -- Constructing dipyramids and rotating rings from straight strips of triangles -- Continuing the paper-folding and number-theory threads -- A geometry and algebra thread : constructing, and using, Jennifer's puzzle -- A polyhedral geometry thread : constructing braided Platonic solids and other woven polyhedra -- Combinatorial and symmetry threads -- Some golden threads : constructing more dodecahedra -- More combinatorial threads : collapsoids -- Group theory : the faces of the trihexaflexagon -- Combinatorial and group-theoretical threads : extended face planes of the Platonic solids -- A historical thread : involving the Euler characteristic, Descartes' total angular defect, and Pólya's dream -- Tying some loose ends together : symmetry, group theory, homologues, and the Pólya enumeration theorem -- Returning to the number-theory thread : generalized quasi-order and coach theorems. |
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Sommario/riassunto |
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This easy-to-read 2010 book demonstrates how a simple geometric idea reveals fascinating connections and results in number theory, the mathematics of polyhedra, combinatorial geometry, and group theory. Using a systematic paper-folding procedure it is possible to construct a regular polygon with any number of sides. This remarkable algorithm has led to interesting proofs of certain results in number theory, has been used to answer combinatorial questions involving partitions of space, and has enabled the authors to obtain the formula for the volume of a regular tetrahedron in around three steps, using nothing more complicated than basic arithmetic and the most elementary plane geometry. All of these ideas, and more, reveal the beauty of mathematics and the interconnectedness of its various branches. Detailed instructions, including clear illustrations, enable the reader to gain hands-on experience constructing these models and to discover for themselves the patterns and relationships they unearth. |
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2. |
Record Nr. |
UNINA9910426056203321 |
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Autore |
Sun Cecile Chu-chin |
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Titolo |
Pearl from the Dragon's Mouth : Evocation of Scene and Feeling in Chinese Poetry |
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Pubbl/distr/stampa |
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Ann Arbor, : Center for Chinese Studies Publications, 1995 |
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ISBN |
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Descrizione fisica |
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1 online resource (178 p.) |
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Collana |
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Michigan Monographs in Chinese Studies ; ; v.67 |
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Classificazione |
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LAN000000SOC000000SOC008000 |
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Disciplina |
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Soggetti |
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Chinese poetry - History and criticism - Theory, etc |
Poetry |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Sommario/riassunto |
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The interplay between the external world (ching) and the poet's inner world (ch'ing) lies at the heart of Chinese poetry, and understanding the interaction of the two is crucial to understanding this work from within its own tradition. Closely coordinating her discussions of poetry and criticism so that practice and theory become mutually enriching and illuminating, Sun offers sensitive and original readings of poems and a wealth of insights into Chinese poetics. |
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