The phrase "core field of" is correct and usable in written English.
It can be used to refer to a primary area of study, expertise, or focus within a broader discipline.
Example: "The core field of environmental science encompasses various aspects of ecology, conservation, and sustainability."
Alternatives: "main area of" or "primary domain of".
We can learn so much looking outside our core field of expertise.
Private law and the European common market, the core field of activity of the European Community (EC), are in a relationship of mutual dependence and reinforcement.
The core field of CM4 is represented by its coefficients up to degree 14.
The first part focuses on the classical foundations of software engineering, such as notations, architecture, and processes, while the second addresses empirical software engineering in particular as the core field of Dieter Rombach's contributions.
observations of transformational trends within the core field of the discipline – are not adopted, as far as we are aware.2 It appears to us worthwhile and imperative to remedy this state of affairs.
Efforts to produce such maps are hindered because of the masking effect of the core field on the large scales of the lithospheric magnetic field.
In the mid-1980s Hewlett-Packard found itself losing business in its core fields of science and engineering to rival computer workstation companies such as Sun Microsystems, Inc., Silicon Graphics, Inc., and Apollo Computer.
It also outlines the different diseases of silkworms and, finally, different applications of silk proteins in the core fields of biomedical engineering.
By contrast with most fields of economic regulation, the EC did not have to replace or harmonize core fields of private law such as contract or tort law to realize its market project.
As a consequence, legislative harmonization or unification of core fields of private law such as contract or tort law was apparently not even debated during the first decade of the EC's existence.
The Classical Studies program is committed to its traditional core fields of historical, art historical, archaeological, and literary research while extending its range into the study of ancient thought broadly conceived: ancient philosophy, historiography, medicine, religion, and the later reception of ancient ideas.
