- Real number (Wikipedia)
In mathematics, a real number is a number that can be used to measure a continuous one-dimensional quantity such as a distance, duration or temperature. Here, continuous means that pairs of values can have arbitrarily small differences. Every real number can be almost uniquely represented by an infinite decimal expansion.
- Slovakia (Wikipedia)
Slovakia (/sloʊˈvækiə, -ˈvɑːk-/; Slovak: Slovensko [ˈslɔʋenskɔ]), officially the Slovak Republic (Slovak: Slovenská republika [ˈslɔʋenskaː ˈrepublika]), is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the west, and the Czech Republic to the northwest. Slovakia’s mostly mountainous territory spans about 49,000 square kilometres (19,000 sq mi), hosting a population exceeding 5.4 million. The capital and largest city is Bratislava, while the second largest city is Košice.
