div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: im-pmf-enweeblycom · to the topology are called compact The covers contained in the topology are called open covers Since every topology is closed under arbitrary union we get src=https:reader034vdocumentinreader034viewer20220520216035e41b5032274d6f689392html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: im-pmf-enweeblycom · to the topology are called compact The covers contained in the topology are called open covers Since every topology is closed under arbitrary union we get src=https:reader034vdocumentinreader034viewer20220520216035e41b5032274d6f689392html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: im-pmf-enweeblycom · to the topology are called compact The covers contained in the topology are called open covers Since every topology is closed under arbitrary union we get src=https:reader034vdocumentinreader034viewer20220520216035e41b5032274d6f689392html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdiv