Yup, it is correct. And @amipp170 is right also! Whenever you have A--->B and B-->A (which is what you have here if you take the contrapositive of the second statement), you can make the statements into one biconditional AB.
Do you guys give personal statements/ essays/ other material you plan on submitting to schools to those writing your LoR too? Or is that discouraged. Also, are you able to read a given LoR to decide among the ones you have which one to submit?
... meaning of an author's statements can only be understood through ... meaning of the critic's statements can only be understood through ... that because the critic's statements can only be understood through ...
@tanes256. Thanks, but I was asking for denying the conditional statements (group 1~4). Should I just place "It's not the case that" in front of the conditional statements to deny them?