Is Time Dilation Relative in Special Relativity Experiments?

[Dale]

Can an Inertial Reference Frame X compare the velocities of objects Y and Z, relative to X's frame of reference, such that either Y's velocity is greater then Z or Z's velocity is greater than Y's?

Velocity is a vector and vector spaces are not ordered sets so they don't have a "greater than" operation. Speed is a positive real number which is an ordered set so it does have a "greater than" operation. So no, you cannot compare velocity that way, but yes, you can compare speed that way.

 

[objecta99]

Thanx Dalespam, that's a very clear way of understanding it. Thanx PeterDonis, sorry for the lack of paragraphs. Thanx Nugatory. I may have succeeded in asking one of the lamest questions (repeatedly) on this forum. Glad to see that it was a nonsensical question by the definition of relative velocity. 'twas a Poor question in one sense, but it had some pedagogical value for me.