The phrase "a point of variation" is correct and usable in written English.
It can be used to refer to a specific aspect or detail that differs or changes within a particular context or subject.
Example: "In our analysis of the data, we identified a point of variation that could significantly impact our results."
Alternatives: "a point of difference" or "a point of divergence".
The point of confluence of the two diagrams of u and u′ indicates a substantial point of variation and the existence of the trend.
This is consistent with a previous study, which used an end point of variation in hospital referral rates and concluded that the individual nature of learning from experience leads to a variation in approach to risk tolerance and associated confidence levels for decision making.
A larger searching window of tracking points shows an improved performance in point of variation and robustness at fast movements.
A face is naturally recognizable by a human regardless of its many point of variation such as skin tone, facial hair, etc. Face detection is a required first step in face recognition systems [16, 29].
The main point of variation tends to be whether models are athletic or waifish; Kate Upton counts as an outlier.
Whether the subject of the discussion is the integration of individuals or ethnic groups is another point of variation.
I argue that the status of ergativity is systematically connected to another, seemingly independent point of variation: variation in object shift, i.e. whether the object raising to a structurally high position is a full DP or a pronoun (cf. Woolford 2017).
One point of variation concerns de novo initiation of closure at the forebrain/midbrain boundary (Closure 2 in mice) which may be absent from human neurulation (63).
From such a point of view, the authors investigated the variation of observed ground motions within a very small distance in this study.
We do not, after all, the externalist will remind us, see this movement occur in all moral agents; some will judge it right to φ without coming to want to φ. Externalists typically take it as a point of common sense observation that wide variation exists in the impact moral judgments have on people's feelings, deliberations, and actions (Svavarsdottir 1999, 161).
