на множестве целых чисел  задано бинарное  отношение p(x,y) : x = y . Исследовать свойства этого отношения ( рефлексивность, антирефлексивность, симметричность, антисимметричность, транзитивность, связность) Является ли  p отношением эквивалетности? 
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Great Britain has the official name – The United Kingdom of Great Britain and Northern Ireland (or UK – for short). It is situated on the British Isles. England, Wales, Scotland and Northern Ireland are the parts of Great Britain. Administratively the UK is divided into 55 counties. The total territory is over 244 thousand square kilometers (the 75th place among other countries in the world).

The population of the UK is over 57 mln.

The country is washed by the North and Irish Seas, the Atlantic Ocean and the English Channel. The country has many rivers. The longest of which are the Severn, the Thames, the Clide . The highest mountain is Ben Nevis in Scotland. North and West of the country are highlands, South and East - lowlands 

The climate is mild. The country possesses natural and mineral resources: oil, gas, iron ores, coal and some metals.

The UK is a highly developed industrial country. The main industrial branches are aircraft and navigation equipment, electronics, machinery, chemicals and textile, automobile and ship-building

The country is rich in old cultural traditions and customs. The official language is English. The national symbol is the national flag “Union Jack”, having 3 white and red crosses on the dark blue field.

The capital of the UK is London. There are many large cities: Birmingham, Glasgow, Liverpool, Manchester, Edinburgh.

The UK is a constitutional monarchy, headed by the Queen. But her Power is limited by the oldest Parliament in the World. It consists of 2 chambers: The House of Lords and the House of Commons. The Government is headed by a Prime Minister – the leader of the party having the majority in the House of Common.

The country has a multiparty system. The largest of the parties are the Conservatives (the Tory), the Liberal (the Whigs) and the Labour Party.