The phrase "a theoretical statement of" is correct and usable in written English.
It can be used when discussing concepts, hypotheses, or frameworks in academic or scientific contexts.
Example: "The research paper presents a theoretical statement of the relationship between social media usage and mental health outcomes."
Alternatives: "a conceptual declaration of" or "a theoretical assertion of".
For it is difficult to say precisely what the distinction is between accepting the usefulness of a theoretical statement and actually believing it to be true.
Moreover, truth is also relative in this sense, in virtue of the close connection between truth and meaning: if the meaning of a theoretical statement is relative to a theory, paradigm, or conceptual scheme, then its truth value will be relative in the same way and to the same extent.
In 1867 he had been one of the founders, with Mrs. P.A. Taylor, Emily Davies, and others, of the first women's suffrage society, which developed into the National Union of Women's Suffrage Societies, and in 1869 he published The Subjection of Women (written 1861), the classical theoretical statement of the case for woman suffrage.
Promising approaches to the expansion of these studies on the basic interplay between topology and dynamics to general signaling network structures include more abstract representations like those used in [14] and [15], because they allow for a systematic evaluation of theoretically possible alternative network designs and thus to arrive at theoretical statements of general validity.
In Russell's and Carnap's view, the theoretical statements of the empirical sciences were, at least according to Feigl, "considered as translatable into statements concerning the data of direct experience" (1950a, p. 35).
Here Feyerabend introduced what was to become a long-running theme in his work: that there is no separate and neutral "observation-language" or "everyday language" against which the theoretical statements of science are tested, but that "the everyday level is part of the theoretical rather then something self-contained and independent" (Philosophical Papers, Volume I, p. 217, emphasis added).
This was one of the central theoretical statements of his Marxist period that included the texts The Imposition of Sexual Morality (1932), The Sexual Struggle of Youth (1932), The Mass Psychology of Fascism (1933), "What is Class Consciousness?" (1934) and The Sexual Revolution (1936).
As both a broad overview of earlier research and a systematic theoretical statement, Plant Succession defined a major area of research that became a central focus of plant ecology prior to World War II.
"But that is an entirely theoretical statement with regard to the situation according to treaties".
