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1. |
Record Nr. |
UNINA9910705234303321 |
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Titolo |
Amendment to supplementary code of fair competition for the flexible metal hose and tubing manufacturing industry (a division of the fabricated metal products manufacturing and metal finishing and metal coating industry) as approved on October 31, 1934 |
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Pubbl/distr/stampa |
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Washington : , : United States Government Printing Office, , 1934 |
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Descrizione fisica |
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1 online resource (4 pages) |
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Soggetti |
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Metal products - United States |
Hose |
Tubes |
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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 title screen (viewed Apr. 9, 2014). |
At head of title: National Recovery Administration. |
Publication pre-dates item numbers. No item number has been assigned. |
"Registry no. 1140-04." |
"Approved code no. 84G1--Amendment no. 1." |
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2. |
Record Nr. |
UNINA9910964239103321 |
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Autore |
Chinn William G |
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Titolo |
First concepts of topology : the geometry of mappings of segments, curves, circles and disks / / by William G. Chinn and N.E. Steenrod |
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Pubbl/distr/stampa |
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Washington, D.C., : Mathematical Association of America, 1966 |
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ISBN |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (viii, 160 pages) : digital, PDF file(s) |
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Collana |
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The Anneli Lax new mathematical library ; ; 18 |
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Altri autori (Persone) |
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SteenrodNorman Earl <1910-1971.> |
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Disciplina |
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Soggetti |
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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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Nota di contenuto |
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Introduction -- pt. I. Existence theorems in dimension 1. The first existence theorem ; Sets and functions ; Neighborhoods and continuity ; Open sets and closed sets ; The completeness of the real number system ; Compactness ; Connectedness ; Topological properties and topological equivalences ; A fixed point theorem ; Mappings of a circle into a line ; The pancake problems ; Zeros of polynomials -- pt. II. Existence theorems in dimension 2. Mappings of a plane into itself ; The disk ; Initial attempts to formulate the main theorem ; Curves and closed curves ; Intuitive definition of winding number ; Statement of the main theorem ; When is an argument not a-proof? ; The angle swept out by a curve ; Partitioning a curve into short curves ; The winding number W ; Properties of A and W ; Homotopies of curves ; Constancy of the winding number ; Proof of the main theorem ; The circle winds once about each interior point ; The fixed point property ; Vector fields ; The equivalence of vector fields and mappings ; The index of a vector field around a closed curve ; The mappings of a sphere into a plane ; Dividing a ham sandwich ; Vector fields tangent to a sphere ; Complex numbers ; Every polynomial has a zero ; Epilogue: A brief glance at higher dimensional cases -- Solutions for exercises. |
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Sommario/riassunto |
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Over 150 problems and solutions. |
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