The phrase "about the interrelation of" is correct and usable in written English.
You can use it when discussing the connections or relationships between different subjects or concepts.
Example: "This research paper explores the interrelation of economic factors and social behavior in urban environments."
Alternatives: "regarding the relationship between" or "concerning the connections among".
Tells about the interrelation of the tournament and the bass-fishing market.
It was clear in 2003 that executives were confused about the interrelation of purpose and profits.
Mayer started off as an artist, and still sees art and architecture as similar, being both about the interrelation of human bodies and space.
But the point is familiar to anyone who has read anything about the interrelation of diet, exercise and health in the last 20 years.
Doing independent work abroad may be complicated for juniors who have not thought carefully about the interrelation of study abroad and departmental work.
In addition to the inevitable interpretative problems involved in applying norms fashioned in multicultural settings, controversial theories about the interrelation of national and international law, as well as many procedural difficulties, burden the human rights claimant in this setting.
So, more needs to be said about the interrelations of the participatory intentions if they are to account for the coordination and cooperativeness we find in shared or joint activity.
How else should we think about the neural network Google has built so its translator can model the interrelation of all words in all languages, in a kind of three-dimensional "semantic space"?
"More and more stories about who we are and how we live are becoming molecular," said Paul Rabinow, an anthropologist at the University of California, Berkeley, who studies the interrelation of science and culture.
Symonds C 1953 The interrelation of trauma and cervical spondylosis in compression of the cervical cord.
