User:Espresso-hound/sandbox


 * Creating a new page for ``psudocircle continuum'':

The pseudocircle continuum is the topological space that can be characterized as a circularly chainable, hereditarily indecomposable, separating plane continuum. The discovery of such a topological space is attributed to R. H. Bing. , and it


 * Notation issues in the article on filters in topology: