## Abstract

Let A_{1},.,An(n ≥ 2) be ideals of a commutative ring R. Let G(k) (resp., L(k)) denote the product of all the sums (resp., intersections) of k of the ideals. Then we have L(n)G(2)G(4)G(2⌊ n/2⌋) ⊂ G(1)G(3) G(2⌈ n/2 ⌉-1). In the case R is an arithmetical ring we have equality. In the case R is a Prüfer ring, the equality holds if at least n-1 of the ideals A_{1},.,A_{n} are regular. In these two cases we also have G(n)L(2)L(4) L(2⌊ n/2 ⌋) = L(1)L(3) L(2⌈ n/2 ⌉-1). Related equalities are given for Prüfer v-multiplication domains and formulas relating GCD's and LCM's in a GCD domain generalizing gcd(a_{1}, a_{2})lcm(a_{1}, a_{2}) = a_{1}a2 are given.

Original language | English |
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Article number | 1650010 |

Journal | Journal of Algebra and its Applications |

Volume | 15 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2016 Feb 1 |

## Keywords

- arithmetical ring
- GCD
- LCM
- Prüfer ring
- PVMD