Hard class, but Sargsyan is very effective and wants you to succeed. He makes math enjoyable with his light-hearted humor and really tries to connect with the class. The length and complexity of the derivations and proofs may seem daunting and confusing at first, but Grigor really breaks them down into bite sized pieces for you to understand. He is a very fair grader and his test truly test your retention of what you have learned and your ability to apply those skills to more complex, outside the box type problems. Great professor!