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I've nibbled away at these problems and came up with the following somewhat inelegant solutions:

Problem (1) I separated the first four lines of the matrix into a separate array and then fiddled with tilde spacing for the final alignment of this array over the matrix. This left some unwanted ...

Hello All,

I've been using LaTeX for about two weeks and this is my first post on the forum. I'd like to begin by thanking in advance anyone who reads this for the time they spend doing so, I'm very grateful.

I know that the matter of alignment in matrices has been dealt with already in a number ...