Is the sentence "It is raining" a mathematically acceptable statement? A mathematically acceptable statement is the one which is either true or false but not both. It is not an exclamatory sentence, an imperative sentence or an interrogative sentence. It must not contain variable times or places like today tomorrow etc.
 Now is the sentence ' It is raining' a mathematical statement ? I can understand "it rains" is a statement because always true but what about this ?
 A: According to your definition of a mathematically acceptable statement, the sentence "it is raining" would NOT be considered acceptable for the following reasons:


*

*It is subjective to the context in which you would be using said sentence.the truth value of the "it" would depend on the object being talked about in the previous sentence.

*It would also depend on the exact meaning of the word raining, for example, you could mean that it is raining water in that moment, however if you were talking about cats or dogs, then it would refer to the figurative (or literal) cats or dogs raining from the sky.

*It is also limited to scope, the statement is limited by the scope of area to which you are referring. Are you referring to the entire planet, or are you referring to a specific geological area? Whereas a statement such as 2 + 2 = 4 would be true no matter where it is referred to.

*Lastly, if it contains no variable statements, such as the passage of time, then, wouldn't such a statement always be false as rain by definition requires falling water, and the act of falling requires a change in time?

A: If you look at the definition of statement by typing it on google, you will find that:

A statement (or proposition) is a sentence that is either true or false ( not both).

Now there is nothing different in mathematical statement:

A Mathematical statement is a sentence that is either mathematically true or false ( not both).

In your case "It is raining", is not a mathematical statement. This is because there is  sense of ambiguity. It is possible that "It is raining" and it is also possible that "It isn't raining". It is not certain that "It is raining" or not. You can't say after reading the sentence that "It is raining" or not (It is true or false). So, this is not following the criteria of being a mathematical statement.
