...I have been doing on-line tutoring for 4 years and believe I’ve helped several students improve their grades while also keeping my own cognitive skills refreshed in retirement. I also have previous experience as a substitute teacher and teaching religious education. My online tutoring experienc... (read more)
...I believe that learning is about the whole person. The important thing to me is seeing how what you learn helps you grow. Even if you are struggling with a difficult and dreaded subject, I try to show how you can be successful and feel good about your learning. (read more)
...Since then I attended the U.S. Naval Academy, majoring in Systems Engineering, and have served 10 years as a Navy Nuclear Submarine Officer. I have a B.S. in Systems Engineering (focusing primarily on electrical control systems) from the U.S. (read more)
...It has also been shown that if R on A is antisymmetric, R n R-1 ? {(a, a): a ? A}. Therefore, a relation R on a set A is antisymmetric if and only if R n R-1 ? {(a, a): a ? A}.
Given that A and B are sets, (A - B) n (B - A) = { }.
Let A and B be sets. Suppose, for the sake of contradict... (read more)