| Maxima<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>) | Returns the maximal elements of the given sequence, based on the given projection. |
| Maxima<TSource, TKey>(IEnumerable<TSource>, Func<TSource, TKey>, IComparer<TKey>) | Returns the maximal elements of the given sequence, based on the given projection and the specified comparer for projected values. |