The phrase "a core idea of" is correct and usable in written English.
It can be used to refer to a fundamental or central concept within a larger context, such as a discussion, theory, or piece of writing.
Example: "The core idea of the theory is that all living organisms evolve over time through natural selection."
Alternatives: "a fundamental concept of" or "a central theme of".
It is a core idea of science that underpins all present study of plant and animal biology, and there is no genuine dispute in the scientific community that it occurs...
A core idea of the methods is to decompose the original equation into linear and nonlinear subequations, in which the linear subequation has a closed-form solution in the Fourier space.
Further, Fernandes and Duarte [26,31] build a hybrid solution that combines paravirtualization with plane separation, a core idea of programmable networks.
It has even been suggested that large parts of the Pyrrhonist position expounded in the key passage of Aristocles mentioned earlier are in fact additions by Timon to a core idea of Pyrrho's.
Obviously patients must be included because a core idea of personalized medicine is that patients increasingly take control of their own health.
(p. 130) Such a statement is so vague as to be virtually useless as an explanation; instead, we view this description as an epistemological claim: students should understand that underlying the process of cellular respiration that biology claims as a core idea are a multitude of physical interactions that account for those biological phenomena.
This assumption is a core idea in the theory of public goods and collective actions.
So a second core idea of emotional agility is the ability to enter into space with oneself that is connected with one's own litmus of success, one's own values, one's own why.
Based on the method of separating epistemic and aleatory uncertainties in a variable, the core idea of the research is firstly to establish a novel deterministic transition model for auxiliary variables, distribution parameters, random variables, failure probability, then to propose the improved importance sampling (IS) to solve the transition model.
In a word, the core idea of ensemble learning is to organizing different weak classifiers into one strong classifier.
It's a visualization of the core idea of faith — of the form of strength that says "I will not hold to things not meant for me; I will act well and let come what may".
