Complex sentence: Studied at Baghdad's House of Wisdom under the Banu Musa brothers.Discovered the theorem by which pairs of amicable numbers can be found; i.e., two numbers such that each is the sum of the proper divisors of the other.
Split into simpler sentences: Studied at Baghdad's House of Wisdom under the Banu Musa brothers. Knows a method by which pairs of amicable numbers can be found; i.e., two numbers such that each is the sum of the proper divisors of the other.