Bourbaki-boundedness and Bourbaki-completeness on some metric spaces

In this thesis the concepts of Bourbaki boundedness and outside Bourbaki boundedness are defined in asymmetric metric spaces and these concepts are studied. After defining Bourbaki Cauchy and cofinally Bourbaki Cauchy sequences in asymmetric metric spaces, it is investigated whether Bourbaki boundedness can be characterized by means of these sequences. Moreover by using these sequences, definitions of different type of completeness are given. Some important results are obtained related to compactness, sequentially compactness and uniformly locally compactness in asymmetric metric spaces. By using the notion of natural density, some basic concepts such as convergence, Cauchy sequences, limit point and cluster point are generalized and some fundamental results are obtained on asymmetric metric spaces. Unlike the case of metric spaces, some differences are observed related to these concepts. In the last part of the thesis, a new condition equivalent to Bourbaki completeness is stated by defining a new class of sequences named as a statistical Bourbaki-Cauchy sequence in metric spaces. After defining the statistical Bourbaki Cauchy regular function which is a function preserving statistical Bourbaki Cauchy sequences, some new characterizations of Bourbaki completeness and Bourbaki boundedness are introduced by means of these functions.