Unless specifically announced, you are expected to do each homework on your own. You may discuss concepts with your classmates, but there must be no interactions about solutions. You may consult the web but the work handed in must be done on your own.
The penalty for cheating on any assignment is straightforward. On the first occurrence, you will receive a zero for the assignment and your course grade will be reduced by one full letter grade. A second occurrence will result in course failure.
Unless announced in advance, solutions will be posted no sooner than two days after the due date. Homework will be accepted until that point with a penalty of 10% per day that it is late. No assignments will be accepted after the solutions have been posted. Late homework will only be accepted in class, during office hours, or electronically by email to the TA.
Homework regrades requests must be made within one week after the graded homework is returned (exam regrade requests must be made immediately).