Re: The set of necessary FISONs

On 1/28/2025 7:15 AM, WM wrote:

On 28.01.2025 13:45, Richard Damon wrote:

On 1/28/25 3:58 AM, WM wrote:

 

Many sets of FISONs whose union is N exist, and each of those sets has a first element.

 Name the first element of only one of those sets which is required in that set.

Think of a tree:
          0
         / \
        /   \
       /     \
      1       2
     / \     / \
    3   4   5   6
....................
Well, the root node is 0. So, is that an origin point? ;^)