The phrase "assertion is about" is correct and usable in written English.
It can be used when discussing the subject or content of a particular assertion or statement.
Example: "The assertion is about the importance of environmental conservation in modern society."
Alternatives: "claim pertains to" or "statement concerns".
These assertions are about an overwhelming sense of entitlement on behalf of religious organizations to force anyone within their reach to adhere to their beliefs.
Barwise & Etchemendy 1987 illustrate the idea with an imagined utterance of sentence (12): If assertions are about particular situations, reports of assertions might not be accurate unless they take into account the situations the assertions were about.
And there are more repercussions of Austinian reasoning: if assertions are about particular situations, beliefs should be, too, and this means that our belief ascriptions might not be accurate unless they take into account the situations the beliefs are about.
(Barwise & Perry 1983, 159) On the Austinian perspective, at least certain kinds of implicit restrictions for quantification domains are a direct consequence of the fact that assertions are about particular actual situations, and that those situations can be smaller or bigger parts of the actual world.
As a logical principle, the PC is about opposite assertions.
These two requirements in turn require the adoption of the idea of God the word idea being used in the Kantian sense, which means that no assertion is made about the metaphysical reality of God.
An assertion is a statement about something that is thought to be true, for example, the assignment of a function to a protein.
Topic situations, too, are independently needed: they are the situations that assertions and beliefs are about, and they are key players in the semantics of tense and aspect.
When the excerpts came out, Steinberg said that they contradicted Haney's assertion that the book was about golf.
