module LogicalKoans

function not(x)
end

function equals(x, y)
end

function not_equals(x, y)
end

function less_than(x, y) 
end

function greater_than(x, y) 
end

function less_than_or_equal_to(x, y) 
end

function greater_than_or_equal_to(x, y) 
end

end