Page:A History Of Mathematical Notations Vol I (1928).djvu/157

ance of the plus and minus signs in Holland. As the symbols for powers one finds here the notation of Grammateus, N., pri., se., 3^a, 4^a, 5^a, etc., though occasionally, to fill out a space on a line, one en-

Fig. 60.—From Gielis van der Hoecke's In arithmetica (1537). Multiplication of fractions by regule cos.

counters numerus, num., or nu. in place of N.; also secu. in place of se. For pri. he uses a few times ṗ.

The translation of matter shown in Figure 60 is as follows: "[In order to multiply fractions simply multiply numerators by numera-