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Hello, an idea =), add in the poly2symb command, an array as a list representation of a multivariable polynomial

univariable polynomials
symb2poly( x^2 + 2*x^1 + 3*x^0, x ) [↵] returns poly1[ 1, 2, 3 ]
poly2symb( poly1[ 1, 2, 3 ], x ) [↵] returns x^2 + 2*x + 3

multivariable polynomial
symb2poly( 10*x^3*y^1 + 12*x^2*y^2, [x, y ] ) [↵] returns %%%{ 10, [ 3, 1 ]%%%}+%%%{ 12 ,[ 2 ,2 ]%%%}
convert( symb2poly( 10*x^3*y^1 + 12*x^2*y^2, [x, y ] ), list ) [↵] returns [ [10, [ 3, 1 ] ], [ 12, [ 2, 2 ]] ]

poly2symb( [ [10, [ 3, 1 ] ], [ 12, [ 2, 2 ]] ], [ x, y ] ) -> 10*x^3*y + 12*x^2*y^2

Reason: it is easier and faster to type a polynomial in its list form or list of lists than the algebraic expression, then the list is converted to symbolic expression with poly2symb cmd

Thanks

This already exists in recursive representation, like this symb2poly( 10*x^3*y^1 + 12*x^2*y^2, x, y )