6.8.26 Set theory

Condition: Given a correspondence \( \Gamma=(X, Y, G) \), where \( X=\{a, b, c, d\} \), \( Y=\{1,2,3,4\}, G=\{(a, 2),(b, 3),(c, 1),(a, 4)\} \). Required: 1. Draw the correspondence as a graph. 2. Find out which of the properties (certainty, surjectivity, etc.) it has. 3. Construct a correspondence between finite sets that has a set of properties opposite to the given one.