12.13 Assignment #7: XSLT

due: Wednesday, Nov 19

Write a XSLT stylesheet that accepts XML files satisfying the given DTD. The XSLT should output the given information in XHTML, with a diagnostic message provided for each operation. The messages should relate to validity of the following conditions.

The content of each cell consists of an integer or a decimal number, where negative numbers are also permitted.
All the rows of a matrix have the same number of cell.
The matrices of each operation have compatible dimensions with regard to the requested operation.

<!ELEMENT math (plus | mult)* >
<!ELEMENT plus (matrix,matrix) >
<!ELEMENT mult (matrix,matrix) >
<!ELEMENT matrix (row)* >
<!ELEMENT row (cell)* >
<!ELEMENT cell (#PCDATA) >

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