I have been unable to do two separate things that i consider quite essential for advanced mathematics.

I am unable to find any way of implementing a block matrix. That is a big matrix that is dividied into submatrices by vertical and horizontal lines within the matrix

I can’t find a way to cancel equation terms to zero with an arrow striking through them. Similar to the cancelto command in Latex

Any suggestions are welcome. Thank you!

Question 1

Question 2

​I have been unable to do two separate things that i consider quite essential for advanced mathematics.I am unable to find any way of implementing a block matrix. That is a big matrix that is dividied into submatrices by vertical and horizontal lines within the matrixI can’t find a way to cancel equation terms to zero with an arrow striking through them. Similar to the cancelto command in LatexAny suggestions are welcome. Thank you!  Question 1   Question 2   Read More

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