Union
$$A \cup B =$$
{ care, competence, fidelity, hope, interpret, love, organize, purpose, select, will, wisdom }
Symmetric Difference
$$A \ominus B =$$
{ care, competence, fidelity, hope, interpret, love, organize, purpose, select, will, wisdom }
Difference
$$A - B =$$
{ care, competence, fidelity, hope, love, purpose, will, wisdom }
Cartesian Product
$$A \times B =$$
{ (care, interpret),
(care, organize),
(care, select),
(competence, interpret),
(competence, organize),
(competence, select),
(fidelity, interpret),
(fidelity, organize),
(fidelity, select),
(hope, interpret),
(hope, organize),
(hope, select),
(love, interpret),
(love, organize),
(love, select),
(purpose, interpret),
(purpose, organize),
(purpose, select),
(will, interpret),
(will, organize),
(will, select),
(wisdom, interpret),
(wisdom, organize),
(wisdom, select) }
Erikson's stages of psychosocial development