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Two problems in Kelsen’s theory of validity

✍ Scribed by Stephen Guest

Publisher
Springer Netherlands
Year
1980
Tongue
English
Weight
671 KB
Volume
2
Category
Article
ISSN
0144-932X

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📜 SIMILAR VOLUMES

Two problems of number theory in Islamic
Two problems of number theory in Islamic times
✍ J. Sesiano 📂 Article 📅 1991 🏛 Springer-Verlag 🌐 English ⚖ 216 KB

Let a(n) denote the sum of the positive divisors of the integer n and s(n) the sum of its aliquot parts, that is, of the divisors of n other than n itself; then, Greek mathematicians had considered the problem of the determination of a perJect number (z~.~o~ do~6~), that is, a number n such that s(