... 36 seconds upfront drawing one valid game board, on in my ... acceptable situation question) possibly 2 valid game boards to start approaching ... conditions. This means to me "valid." I try to do this ...
... logical expression semantically entails certain valid conclusions. Short of proof -theoretic ... went about listing all the valid categorical syllogisms. They gave them ...
... ." This would NOT be a valid inference. On the other hand ... ." This would actually be a valid inference. The fact that the ... or not it becomes a valid inference dictates that they are ...