I am confused on what to do with this problem from my textbook because it does not give me sets. For example: A = {1, 2, 3} and B = {1, 2, 3, 4} and R1 = {(1,1), (2,2), (3,3), (4,4)} and R2 = {(1,1), (1,2), (1,3, (1,4)}, then I can do the unions and intersection, etc but I do not have that options here.

What I have is this as my problem:

R1 = {(a, b) R^2 | a > b}, the "greater than" relation

R2 = {(a, b) R^2 | a>b}, the "greater than or equal to" relation

R3 = {(a, b) R^2 | a < b}, the "less than" relation

R4 = {(a, b) R^2 | a<b}, the "less than or equal to" relation

R5 = {(a, b) R^2 | a = b}, the "equal to" relation

R6 = {(a, b) R^2 | a b}, the "equal to" relation

Find:

a.) R1 U R3

b.) R1 U R5

c.) R2 R4

d.) R3 R5

e.) R1 - R2

f.) R2 - R1

g.) R1 R3

h.) R2 R4

The R1, R2, R3... the numbers are subscripts.

Also If I have this, what do I do if i have this white circle in between them, not up high. For example:

a.) R1 R1

I have 5 problems similar to this one.