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Taylor - Theoretic Arithmetic.pdf - Platonic Philosophy

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4, and terminate in 20, are compared to these, the double, i.e.<br />

the first species of multiplicity will be exhibited. Hence, the<br />

first will surpass the first by unity alone, as 2 surpasses 1. The<br />

second will exceed the second by 2, as 4 exceeds 2. The third<br />

will exceed the third by 3, as 6 exceeds 3 by 3. The fourth<br />

will surpass the fourth by 4, and in this way 8 surpasses 4.<br />

And after a similar manner in the rest. But if the third angle<br />

is considered, which begins from 9, and which extends both in<br />

length and breadth as far as to the number 30, and if this is<br />

compared with the first length and breadth, the triple species<br />

of multiplicity will present itself to the view, so that the comparison<br />

will take place through the black angle. And these<br />

numbers will surpass each other according to the natural progression<br />

of the even number. For the first number will surpass<br />

the first by 2, as 3 surpasses 1. The second surpasses the second<br />

by 4, as 6 surpasses 2. The third surpasses the third by 6, as 9<br />

surpasses 3. And after the same mode of progression the rest<br />

are increased. If again, the boundary of the fourth angle is<br />

considered, which is distinguished by the quantity of the number<br />

16, and which terminates its length and breadth in the<br />

number 40, here also a similar comparison being made with<br />

the preceding, will unfold the quadruple species of multiplicity.<br />

Hence, the first will surpass the first by 3, as 4 surpasses<br />

unity. The second will surpass the second by 6, as 8 surpasses<br />

2. The third will exceed the third by 9, as 12 exceeds 3. And<br />

after a similar manner in all the following numbers. If the<br />

remaining angles likewise are considered, the same thing will<br />

take place through all the species of multiplicity, as far as to<br />

the decuple species.<br />

If however, in this description, the superparticular species<br />

are required, they may be found by the following method.<br />

For if we direct our attention to the second angle, the begirlning<br />

of which is 4, and above which is 2, and if the row in

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