The phrase "a definitive relation" is correct and usable in written English.
It can be used when discussing a clear and unambiguous connection or association between two or more entities.
Example: "The study established a definitive relation between diet and health outcomes, providing valuable insights for future research."
Alternatives: "a clear connection" or "an unequivocal relationship."
Landis [ 36] showed that in an adult DM case, the long axes of the mineral rods followed the long axes of associated collagen, but without a definitive structural relation with the collagen period.
No definitive relation between any of the tested parameters, use of the study drug and endothelial (dys-) function or cardiac ischaemia could be demonstrated.
No definitive relation between maternal age and the level of organochlorine pesticides in breast milk has been reported; some studies have found that older mothers have higher levels, whereas others have not (Jensen and Slorach 1991).
It was not possible to draw a definitive conclusion in relation to its influence on colorectal cancer (Mitchell et al, 2008).
He then left him a long, haranguing message, threatening "judicial consequences" and a "definitive breach" in relations with Bild's publishing group, Axel Springer.
"In the event that the consortium reaches a definitive agreement with Barclays in relation to Barclays Africa, it is expected that Atlas Mara will enter into substantive discussions about the potential combination with the consortium," Atlas Mara said.
The miscarriage of justice is widely remembered as a definitive moment in New York's fractured race relations.
Despite robust statistical techniques applied by Mahaffey et al., only a randomized study comparing the efficacy of ticagrelor and clopidogrel in relation to aspirin dose could provide a definitive answer.
A related question - is there a definitive paper on modeling compartmental branching explicitly (i.e. without a 3/2 power rule or other such simplification), including equations for calculating axial current, and perhaps some discussion of relations to morphology?
In recent years, studies have concentrated on materials and their damage behaviour as well as winding optimisation techniques in relation to vessel geometry and manufacturing processes, but none of these studies has established a definitive design rule.
