# Math Help - Partitions Cont..

1. ## Partitions Cont..

Let P_1 and P_2 be the two partitions of [a,b]. Find a partition P_0 of [a,b] such that P_0 is a refinement of both P_1 and P_2.
How woudl I take the union of P1 and P2 to find this?

2. Originally Posted by summerset353
Let P_1 and P_2 be the two partitions of [a,b]. Find a partition P_0 of [a,b] such that P_0 is a refinement of both P_1 and P_2.
How woudl I take the union of P1 and P2 to find this?
I've already answered the question for you before. $P_1,P_2\subseteq P_1\cup P_2$

3. I couldnt see your answer before. i tried opening the link and it didnt work. But thank you!