Union
$$A \cup B =$$
{ acts of service, adaptation, complex overt response, guided response, mechanism, origination, perception, physical touch, quality time, receiving gifts, set, words of affirmation }
Symmetric Difference
$$A \ominus B =$$
{ acts of service, adaptation, complex overt response, guided response, mechanism, origination, perception, physical touch, quality time, receiving gifts, set, words of affirmation }
Cartesian Product
$$A \times B =$$
{ (acts of service, adaptation),
(acts of service, complex overt response),
(acts of service, guided response),
(acts of service, mechanism),
(acts of service, origination),
(acts of service, perception),
(acts of service, set),
(physical touch, adaptation),
(physical touch, complex overt response),
(physical touch, guided response),
(physical touch, mechanism),
(physical touch, origination),
(physical touch, perception),
(physical touch, set),
(quality time, adaptation),
(quality time, complex overt response),
(quality time, guided response),
(quality time, mechanism),
(quality time, origination),
(quality time, perception),
(quality time, set),
(receiving gifts, adaptation),
(receiving gifts, complex overt response),
(receiving gifts, guided response),
(receiving gifts, mechanism),
(receiving gifts, origination),
(receiving gifts, perception),
(receiving gifts, set),
(words of affirmation, adaptation),
(words of affirmation, complex overt response),
(words of affirmation, guided response),
(words of affirmation, mechanism),
(words of affirmation, origination),
(words of affirmation, perception),
(words of affirmation, set) }
The Five Love Languages