Leitfaden für den geometrischen Unterricht an Gymnasien und ähnlichen Lehranstalten
On fans
CONTENTS§ 1. Introduction....................................................................................................................................................................... 5§ 2. Preliminaries.................................................................................................................................................................... 6§ 3. Smoothness........................................................................................................................................................................
Problems and remarks on contractibility of curves
On the fixed point property for set-valued mappings of hereditarily decomposable continua
Strong shape theory
CONTENTS1. Introduction..................................................................................................................................... 52. Terminology and notation.................................................................................................................... 63. Proper maps on contractible telescopes.......................................................................................... 84. The strong shape category.....................................................................................................................
Mapping hierarchy for dendrites
AbstractLet a family S of spaces and a class F of mappings between members of S be given. For two spaces X and Y in S we define if there exists a surjection f ∈ F of X onto Y. We investigate the quasi-order in the family of dendrites, where F is one of the following classes of mappings: retractions, monotone, open, confluent or weakly confluent mappings. In particular, we investigate minimal and maximal elements, chains and antichains in the quasi-order , and characterize spaces which can be...
Einleitung in die kinematische Geometrie verbunden mit einer elementaren Behandlung der cyclischen Curven
Sur une classe de surfaces, représentables, point par point, sur un plan
On two-to-one continuous functions
CONTENTSIntroduction................................................................................................................................................................................3I. General properties of k-to-one functions on locally compact spaces1. Multi-valued functions Ф and ψ......................................................................................................................................... 62. The proof of (I.11)..................................................................................................................................................................
The theory of Marcinkiewicz-Orlicz spaces
A theory of extensions of quasi-algebras to algebras
CONTENTSINTRODUCTION...................................................................................................................................................................... 31. TERMS NOTATION AND LEMMAS.................................................................................................................................. 4A. Quasi-algebras and algebras..........................................................................................................................................................................
The theory of abstract algebras with infinitary operations
Peano-algebras and quasi-algebras
CONTENTSIntroduction.................................................................................................................... 5§ 1. Fundamental concepts for quasi-algebras..................................................... 5§ 2. Peano-algebras.................................................................................................... 13§ 3. Peano-algebras and free quasi-algebras....................................................... 25§ 4. Theorems concerning free sums of quasi-algebras........................................
On categories of structures and classes of algebras
CONTENTS1. Introduction and preliminaries.............................................................................. 52. Pre-scategories and scategories......................................................................... 63. Scategorization......................................................................................................... 84. Abstract scategories................................................................................................ 95. Substructures and products...
On the summability almost everywhere of orthonormal series by the method of first logarithmic means
Neun Tafeln zu den Grundzügen der Mechanik Taf
Die Grundzüge der Mechanik als Leitfaden bei Vorlesungen und zum Selbststudium Text
Sur les équilibres par tranches planes des corps solides à la limite d'écoulement
Sur les fonctions harmoniques presque périodiques
Le problème de Schwarzschild
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