1. How many and which file format can be used to save a list of formulas?

2. how to append to above file?

i would like to let c# program to read the formula in the saved file

what is the command to computing syzygy ideal in maple?

if i restrict value in matrix to 0,1  or 0,1,2 of dimension 2*2 or 3*3

how to show all combination of matrix ?

what are the command of characteristic set and basic set of polynomial in maple?

google can not find, do the commands exists?

what is the command get the number of rows and columns of a matrix?