Most recent change of BinaryRelation

Edit made on August 03, 2009 by DerekCouzens at 07:35:39

Deleted text in red / Inserted text in green

A Binary Relation * defined on a set A is defined as the set of all ordered pairs (a, b) of elements of A with the property that a * b.

Consider the set B = { Albert Einstein, Queen Victoria, David Beckham, Florence Nightingale } and the relation "is the same gender as".

Then Albert Einstein * David Beckham and David Beckham * Albert Einstein. Similarly Albert Einstein * Albert Einstein !!!

A further example, consider EQN:Z , the set of integers. The relation "is greater than" would define such ordered pairs as ( 7, 4) and (-6, -12).

Question: Which person in the set B developed a type of pie chart? Clue: It wasn't David Beckham. Albert Einstein.