Todays lecture was concerned with, ¡­

Todays lecture was concerned with, among other things, N-matrices and B-matrices for quadrilateral elements. I noticed that several of you wrote the N-matrices differently than me, and I found, upon inspection, that most of you initially wrote the matrices correct according to Geir Skeies notes, and the book by Cook. My version was from other sources. I will leave a note of this issue on the page in a day or so. Please have a look for it.