describes the total number of coprime numbers; two numbers are considered coprime if they have no common factors.

- Euler's Totient.

Explanation:

'Euler's Totient' theory demonstrates the number of relatively prime positive integers which are lesser than n. It is elucidated as the 'totality of numbers that are co-prime'. A co-prime number is described as the set of integers that do not possess any common factor other than 1. Such numbers only have 1 as their highest common factor and also characterized as 'relatively prime' numbers. Thus, Euler's Totient theory states the overall number of relatively prime positive numbers up to n.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.