The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
There are a number of ways to create products of spaces, where we say that a topology on Πi∈IXi is a product (as opposed to the product) topology iff each projection of an open set is open. The smallest such product topology is the Tychonoff product (a.k.a. the product): a basic set restricts on finitely many coordinates. The largest such product topology is the box product: a basic set restricts...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.