The discussion centers on the mathematical manipulation of equations involving the variable c, particularly in the context of special relativity. Participants clarify that removing c from the square root in the equation r = sqrt(c^2) + x is not valid, as the expressions yield different results. The conversation also explores how to derive time dilation equations, specifically T_B and T_A, and the correct approach to simplify these equations. Participants point out algebraic errors and emphasize the importance of understanding the underlying physics. The thread concludes with a suggestion to seek further clarification in a dedicated relativity forum.