A fundamental system of invariants of the general modular linear group with a solution of the form problem
Leonard Eugene Dickson · Transactions of the American Mathematical Society · 1911
This fact appears to have been first noted by the writer.See his Linear Groups, p. 216.fTbis theorem is due to Professor E. H. Moore, Bulletin of the American Mathematical Society, vol. 2 (1896), p. 189.His three proofs differ from the above invariantive proof.His sequence of variables is the reverse of that employed here.* If s = 1, the exponents in the last row of B are p"n ; if s = m -1, the exponents in the first row are pn("*-2>.,1]