math article 10pt \pagestyle{empty} inputenc utf8x ucs \"{a} \neq true \neq ≠ \neq true This command gives nice weather! And one can use any fancy UTF-8 characters like ä,ö,ü,ß or even Берлин. 8 мая and 了防疫第. Even HTML markup like <b> bold </b> is possible. amsmath fleqn