Mr. Jarrett on Algebraic Notation. 



81 



■• fir, o) := m + 



»' \m g, (-1)'-' , f (s-l)7i I 



r+l 



=:m+, — -. r . — r.(l -!)•■+' . +0 



r+l 



Li 7+T r-s.n-mj 



= m — 



nT 



m 



C— 1)'-' 1 



S"--! i J Ir-l ==— — 



[r^. (wr-m) ■[«_■ * |s— 1 4 r-s.w-m 



r+l 



= OT + 



r-1 



M s-l ^ r-s.n-m 



=f{r-l,o). 



JiUt / (1, O) = ?K — I— .M . 



Hence, from (5), f{i', i) = o. 



./(r,o) = 0. 



f« = 



an 



U = r-l}| 



d from (3), f{r, «) = 0, ' { 



and from (4), f{r, r) = w'-+' . i- i 



r + l .' ^ 



Q. E. D. 



Cor. Put )n = t, then 



and put m = r, then 



