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P. HISTORY OF ' AATHEMATICAL - School of Mathematics

P. HISTORY OF ' AATHEMATICAL - School of Mathematics

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INDIVIDUAL WRITERS 137<br />

ance <strong>of</strong> the plus and minus signs in Holland. As the symbols for<br />

powers one finds here the notation <strong>of</strong> Grammateus, N., pri., se., 3a,<br />

4", 5", etc., though occasionally, to fill out a space on a line, one en-<br />

FIG. 60.-From Gielis van der Hoecke's In arithmetica (1537). Multiplication<br />

<strong>of</strong> fractions by regule cos.<br />

counters numerw, num., or nu. in place <strong>of</strong> N.; also secu. in place <strong>of</strong> se.<br />

For pri. he uses a few times p.<br />

The translation <strong>of</strong> matter shown in Figure 60 is as follows: "[In<br />

order to multiply fractions simply multiply numerators by numera-

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